Birth name is Liam Cooper
Works on philanthropic aspects and web design for Forrester Creations
Former acting CEO of Spencer Publications
Former president of Spencer Publications
Former vice president of Forrester Creations
Former vice president of Spencer Publications
Former editor of Eye on Fashion
Interned as an IT guy as Spencer Publications
Former computer repair technician
A cabin on the grounds of the Logan Mansion (200 North Beston Place, Los Angeles, CA)
Formerly a cliff house at 22027 Pacific Coast Highway, Malibu, CA
Formerly the Dakota Motel, Los Angeles, CA
Formerly Quinn Fuller's cabin in Topanga Canyon, CA
Steffy Forrester [Married: 2011; divorced: 2012; first time]
Hope Logan [Married: 2012; never legalized: 2012]
Steffy Forrester [Married: 2013; annulled: 2013; second time]
Ivy Forrester [Married: 2015; annulled: 2015]
Steffy Forrester [Married: 2017; annulled: 2018; third time]
Bill Spencer, Jr. (father)
Kelly Cooper (mother; deceased)
Bill Spencer, Sr. (grandfather; deceased)
Karen Spencer (half-aunt)
Caroline Spencer Forrester (half-aunt; deceased)
William Logan Spencer (half-brother)
Caroline Spencer (half-cousin; deceased)
Douglas Forrester (half first cousin, once removed)
Kelly Spencer (daughter; with Steffy; 2018)
unnamed child (miscarriage; with Steffy; 2013)
Beth Avalon Spencer (daughter; with Hope; 2019; currently believes his child is dead)
Quinn Fuller (while amnesiac)
Kissed Steffy Forrester while engaged to Hope Logan 
Tore up Steffy's annulment papers and kept it a secret from fiancée Hope Logan 
Kissed Steffy on day of wedding to Hope Logan 
Punched Rick Forrester 
Kissed Hope Logan while committed to Steffy Forrester 
Punched Wyatt Spencer [2013, 2014]
Drove off with Wyatt Fuller's camper 
Shoved Rick Forrester to the ground 
Kissed Steffy Forrester despite her being married to Wyatt Spencer 
Covered up the crime of Steffy shooting Sheila Carter 
Blackmailed Bill Spencer into giving him control of Spencer Publications 
Punched by Ridge Forrester 
Slapped by Stephanie Forrester 
Suffered a concussion after tripping and hitting his head 
Hospitalized with a concussion following an explosion in Tawny's trailer 
Trapped in a steam room by Quinn Fuller 
Punched by Wyatt Fuller 
Stabbed in the throat with his sword necklace by Quinn Fuller 
Sprained his ankle after being spooked by Quinn Fuller 
Kicked in his sprained ankle by Quinn Fuller 
Attacked by Quinn Fuller and nearly impaled through the heart with a sword 
Knocked himself unconscious in an airplane lavatory 
Fainted from dizzy spells, hitting his head and becoming amnesiac 
Punched by Bill Spencer 
Caught in the demolition of Spectra Fashions and trapped in its wreckage 
Kissed Sally Spectra while married to Steffy Forrester 
Sustained minor injuries and irritation from breathing rubble dust 
Lacerated his hand crushing his sword necklace 
Hit his head on a tree branch and suffered another concussion 
Computer tech Liam Cooper arrived in Los Angeles following the death of his mother, Kelly Cooper, who said he could find his father at design house Forrester Creations. Both Thorne Forrester and publishing magnate Bill Spencer, Jr. had dated Kelly, so they submitted to a DNA test; Liam chafed when the more aggressive Bill turned out to be his father. Liam made the adjustment with the help of Hope Logan, which led to a sweet romance, during which Liam fended off the advances of Hope's rival, Steffy Forrester.
After a misunderstanding with Hope, Liam got drunk at a party and hit his head, waking up next to Amber Moore, who soon claimed she was carrying Liam's baby. Liam and Hope went through a dizzying array of breakups and makeups trying to decide what was best for the child, and Liam faced competition from Hope's ex-boyfriend, Oliver Jones. Liam suffered a concussion in an explosion caused by Amber's pilot light; months later, Liam realized he'd been duped when Amber gave birth to an African-American baby, barely stopping Hope from accepting Oliver's marriage proposal.
When Hope wanted to stay a virgin until her wedding night, Liam became frustrated and publicly proposed to Hope during a showing for her Hope for the Future fashion collection. Liam saved Steffy, who fell in her bathtub and nearly drowned; Liam resisted when Steffy became amorous and let him know she was sexually available. After Liam kissed Steffy and came home to find Hope's engagement ring on his mantel, Liam gave the ring to Steffy and took her to Aspen, exchanging vows with her there during a surprise wedding.
Liam later found out that Hope had seen him kissing Steffy but followed him to Aspen to make things right, only to be locked in a gondola by a disapproving Bill and forced to watch Liam's wedding. Liam wanted to return to Hope but felt obligated to stay with Steffy, who was suffering from a life-threatening blood clot as the result of being thrown from an ATV in Cabo San Lucas. Though Liam forgave Steffy for conspiring with Bill in Aspen, Liam raged upon learning Bill had faked Steffy's MRI to manipulate him into staying with Steffy. Liam asked Steffy for an annulment and was about to marry Hope until Steffy announced she wanted to hold out for a proper divorce.
Liam moved Hope in with him, but was concerned when she became increasingly erratic after freezing up in bed. Liam saved Hope from drowning in the Forrester pool, upset to find she'd been taking excessive doses of antianxiety pills so she could make love to him. After Hope crashed into Steffy on the slopes of Aspen, the furious Liam tended to Steffy and tore up the annulment papers she'd finally agreed to sign.
About to marry Hope in Puglia, Italy, Liam found a note from the absent Hope which declared she couldn't go through with it. Liam professed his love to Steffy, relenting when Hope explained she had been delayed by the sudden appearance of her estranged father, Deacon Sharpe. Liam finally married Hope, but after she saw a video of him kissing Steffy he'd accidentally taken with his iPad, Liam agreed to give Hope a "do-over" wedding. But Liam partied with Steffy the night before and showed up for Hope's ceremony with dyed hair and a temporary tattoo, so Liam found himself single again, soon finding his way back to Steffy.
Liam raged to learn that Hope's brother, Rick Forrester, had told Hope that Liam kissed Steffy before the do-over, and that Bill broke Deacon out of jail to ruin the Puglia wedding. Liam punched Rick and disowned Bill, relenting when Bill stabbed himself with his sword necklace; Liam didn't know Bill cushioned the blow with his money pouch. When Hope wanted Liam back, Liam asked for time to think but walked into a surprise wedding that Steffy interrupted with news she was pregnant. Liam married Steffy instead in a unique ceremony where she roared down the aisle on a motorcycle; Liam asked Steffy to stop riding until after the baby was born and was inconsolable when Steffy had an accident and miscarried. Liam questioned why Steffy suddenly moved to Paris until he followed her there and learned that the accident had left her barren.
Liam tentatively moved on with Hope, who was also seeing Wyatt Fuller. Liam was shocked to learn that Wyatt was his half-brother through a fling Bill once had with Quinn Fuller, but that didn't stop Liam from punching Wyatt for kissing Hope. Liam scrambled to explain when Hope saw a video tribute Liam made for Steffy, realizing Quinn had hacked into his e-mail in an attempt to push Hope toward Wyatt. Getting Hope down the aisle, Liam was surprised when Steffy arrived, telling him she could have children again thanks to a procedure she had done overseas. Liam wished Steffy well but had to follow Hope to Hawaii when she ran off with Wyatt; though Liam explained Quinn had convinced Steffy to see him, Liam flew home alone.
When Liam found security footage that showed Wyatt pocketing the rare "Hope for the Future" diamond he said he'd rescued from jewel thieves, Liam crashed Hope's camping trip with Wyatt and exposed him, but only after he managed to escape being trapped in an elevator by Quinn. Liam cringed when he came upon houseguest Bill having raucous S&M sex with Quinn. Later, after hearing about Hope's pregnancy scare, Liam lured Hope into Wyatt's camper and drove off, trying to convince Hope to date both of them. Having been locked in the Forrester steam room by Quinn, Liam won Hope when Wyatt socked him for calling Quinn an evil bitch.
Liam barely survived when Quinn stabbed him with his sword necklace, then tried to impale him with the real thing. Though Liam was grateful to Wyatt for saving him, their brief truce ended when Wyatt presented Hope with the HFTF diamond at a press conference. Liam walked out on Hope, but agreed to meet her in Paris to get married under the Eiffel Tower. En route, Liam was delayed saving jewelry designer Ivy Forrester, who had fallen into the River Seine. After Hope married Wyatt instead, Liam learned Quinn had pushed Ivy into the Seine on purpose, but Hope decided to stay with Wyatt because she was carrying his baby, so Liam moved on with Ivy during a romantic trip to Amsterdam and talked to Ivy's father, John Forrester, about his intentions. Liam found the pregnant Hope at the bottom of a staircase after she argued with the obsessive Quinn; Liam and Hope admitted they'd always love each other after Hope miscarried and decided to move to Milan.
Enraged that new Forrester CEO Rick was tormenting Ivy, Liam devised a takeover plot involving his father's 12.5% stake in the company, but Steffy would only contribute her 25% if Liam came back to her. Instead, Liam worked with Wyatt and found out that Rick's mistress, Maya Avant, was transgender; Liam and Wyatt were aghast when Bill published an exposé on Maya over the brothers' objections. Liam became vice president of Forrester when his plan to combine Bill's stock with that of Steffy's family was successful.
Just as Liam's feelings for Steffy resurfaced, Liam agreed to marry the Australian Ivy, who was facing deportation, in name only. Though Ivy's cousin, Aly Forrester, who had a history of mental illness stemming from the traumatic death of her mother in childhood, died in a violent confrontation with Steffy, Liam dumped Ivy at Aly's memorial. Liam defended Steffy against Ivy, who was trying to blackmail Steffy with a video that made it seem Steffy had killed Aly. After Liam brokered a truce between the feuding cousins, Liam stumbled upon information that his own cousin, Caroline Spencer, was not carrying the child of her husband, Ridge Forrester, but Liam agreed to keep quiet.
Liam withdrew from Steffy as she insisted on telling Wyatt that new girlfriend Ivy was kissing her brother, Thomas Forrester, behind Wyatt's back; though Liam had rebuffed Ivy's attempt at a reconciliation, Liam walked out on Steffy after her battles with Ivy left Ivy electrocuted and suffering from a concussion. Liam suffered his own concussion when he escorted the departing Ivy onto her plane and hit his head in its lavatory; when Liam came home dizzy from his inadvertent flight to Australia, he found Steffy cuddling in bed with Wyatt and broke off his engagement to her without explaining why.
Collapsing in the Forrester parking lot and sustaining another head injury, an amnesiac Liam woke up in a cabin to find Quinn taking care of him. Believing Quinn's story that they were married couple Adam and Eve, Liam made love to Quinn and told her he loved her as she confided in him about her neglectful mother and once losing a child. Though happy with "Eve," Liam wanted to know more about their life together, finding answers in a photo album that displayed doctored wedding photos. Liam began having memory flashes of Steffy; just as Liam was about to travel the world with Quinn, Wyatt rushed in, which gave Liam total recall. Liam escaped when Wyatt helped him lock Quinn in a closet, but Liam was stunned to learn that Steffy had married Wyatt in his absence.
Liam had Quinn arrested, but dropped the charges when Quinn's attorney reminded Liam his sexual relations with Quinn had been consensual and that it would be nearly impossible to make his case stick. Liam bristled when Bill demanded he respect Wyatt's marriage to Steffy, but Liam cried foul when he discovered a secret love nest Bill had created to cheat on Katie with Katie's sister, Brooke Logan. Horrified Liam tried to warn Steffy's grandfather, Eric Forrester, about Quinn when Eric and Quinn became involved. Liam felt encouraged when Ridge confided that he had a plan to get rid of Quinn, but was confused when Ridge later abandoned it.
Though he was briefly intrigued by Ivy, who had come back from Australia sporting sexier clothes and an American accent, Liam took Steffy back after her marriage to Wyatt imploded. Frustrated by Eric and Quinn's ploy to reunite Steffy and Wyatt, Liam nearly left town until Steffy told him she'd fast-tracked her divorce. Liam married Quinn in Sydney, Australia, and watched Steffy zip-line into the ceremony.
Liam figured out that Bill wanted to bulldoze Spectra Fashions, which was being revived by young Sally Spectra, and that his father had ghost-written a scathing review of Sally's work to facilitate it. Though he knew Steffy disapproved of Sally and her relationship with Steffy's brother Thomas, Liam told Steffy about Bill's scheme, which resulted in Thomas investing $100,000 in Spectra to save it from the wrecking ball and defecting to Spectra. Liam liked Sally's spunk and tried to get Steffy to ease up on her.
Liam put his former I.T. skills to use when Eric left Quinn and disappeared with his former wife, notorious criminal Sheila Carter. Having been told by Quinn that Sheila had a gun in her purse, Liam shouted out when Sheila seemed to reach for it and stood shocked as Steffy pulled out her own gun and shot Sheila. Liam helped cover up that crime, but not the one which saw Bill setting fire to Spectra to make way for his building. Liam recorded Bill's confession and forced Bill to step down from Spencer Publications after Bill punched him in the face. Now CEO of Spencer, Liam bought the burned-out Spectra building and gave it to a grateful Sally. Liam stood his ground with Bill and rejected Steffy's attempts to heal the rift between them, causing a rift of their own. After Bill found a way to delete Liam's recording, Liam returned the CEO seat to his father.
Learning that Bill was getting ready to demolish Spectra, Liam arranged a sit-in with Sally and her staff, becoming trapped in the rubble with her after her employees ran scared. Afraid he would die, Liam let Sally kiss him; after being rescued by Bill and Steffy, Liam told Steffy about Sally's kiss and watched Steffy walk out. Once Steffy came home, Liam surprised her with a vow-renewal ceremony and was overjoyed to learn Steffy was pregnant. But when Liam found paternity test results in her purse, he got Steffy to admit she had slept with Bill, prompting Liam to quit his marriage and Spencer Publications.
Liam was glad to have Hope's support after she returned from Milan, and took Hope up on her offer to handle the philanthropic aspects of her Hope for the Future line at Forrester. Liam ignored Steffy's apologies and presented her with annulment papers, suggesting she and Bill were a better fit for each other. Still, Liam rallied at Bill's bedside when Bill was shot by an unknown assailant. Liam agreed to see Steffy but hit his head on a tree branch outside her house, triggering memory flashes in which Liam saw himself putting a bullet in his dad. Liam confessed to Bill, but Steffy helped him see that he'd simply had a revenge fantasy while unconscious from his most recent concussion.
Liam finally forgave Steffy for her night with Bill, but proposed to Hope when Wyatt told him Bill was still carrying on with Steffy. At the altar, Liam was stunned when Wyatt announced he'd found out Bill and Steffy's continuing “affair” was only a ruse, and understood when Hope wanted to postpone their wedding. Liam was at Steffy's side when she gave birth to their daughter, Kelly, whom Steffy had named after Liam's deceased mother. Liam became confused when Steffy seemed to stall on setting a wedding date; by the time Steffy came around, Liam learned that Hope was pregnant with his baby. Liam planned to make a life with Steffy and Kelly anyway, but when Steffy caught Liam kissing Hope, he was stunned to see Steffy removing her engagement ring and putting it on Hope's finger, essentially proposing to Hope on Liam's behalf.
Liam tried to help find the person who was posting threatening comments on the Hope for the Future web site he'd designed. Liam finally married Hope, only to learn Brooke and Taylor had gotten into a fight during the reception and hurled wedding cake at each other. Liam supported Hope through a miscarriage scare, then agreed to Hope and Steffy's idea that the three of them work to create a blended family with his two children. Later, Liam caught an increasingly unstable Taylor accusing Hope of stealing Steffy's life and escorted Taylor out; Liam felt he had no choice but to tell Hope that Taylor had actually been the one to shoot Bill. Once Hope told Brooke, Liam found himself in the middle between them and Steffy and Taylor, the former wanting Liam to keep Taylor away from the babies and the latter wanting Liam to believe that Taylor posed no threat to them.
Liam was excited to go to Catalina Island with Hope for a “babymoon”, but had to take a separate flight because Kelly was under the weather. Learning Hope had gone into labor, Liam got frustrated not being able to fly to Catalina during a wind storm via conventional means, so Liam called on Bill to have him flown there in a Spencer helicopter. When Liam arrived, he learned that Hope had miscarried his baby. Liam's attempts to console Hope were unsuccessful; Liam worried when Hope only found peace while holding Phoebe, an infant whom Steffy had just adopted as a sister for Kelly. Liam stood up for his marriage to Hope when she continually insisted he should leave her for Steffy and be a father to both of Steffy's daughters.
Liam felt frustrated when Hope didn't seem to be getting better, and suffered another blow when Caroline died from a sudden blood clot. Liam supported Thomas when he came home with Douglas, his son with Caroline; Liam was glad that Hope found solace with the motherless Douglas, especially since Steffy had taken Kelly and Phoebe to Paris for an extended trip. At Hope's insistence, Liam went to Paris to spend time with the babies, only to get a call from Wyatt that Thomas was making moves on Hope in his absence. Liam flew home and demanded that Thomas back off instead of using Douglas to get closer to Hope.