Robert Downey Jr. is continuing his teasing streak with a brand-new Instagram post featuring Doctor Doom and Iron Man, but this time it is a Christmas-themed ornament of both characters. Avengers: Doomsday, which will mark the major debut of Downey as Doctor Doom.This is not the first time that Downey has taken to his Instagram to tease his appearance as Doctor Doom, as he had also posted a similar Thanksgiving post where Doom and Iron Man were holding on to each stick of the wishbone.Keep reading to find out more.Robert Downey Jr. teases Avengers: Doomsday with Christmas ornaments of Doctor Doom and Iron ManMarvel has finally released a first-look teaser for Avengers: Doomsday, and the teaser was nothing short of an explosion because it confirmed that Chris Evans' Steve Rogers would be returning to the Marvel Cinematic Universe as Captain America. The teaser made Avengers: Doomsday one of the most anticipated releases of the year, and that is before we even get a look at Robert Downey Jr.The official teaser from Marvel found a bike rider returning home, and as he leaves his helmet behind, we glimpse his hand and his wedding ring. The next shot finds the rider leaving behind his Captain America jacket and instead holding on to a little baby. The person is revealed to be none other than Steve Rogers, and a December 18, 2026, release date is announced.If the official teaser trailer wasn't enough, Robert Downey Jr. also teased the upcoming release with his Christmas post. The post featured Doctor Doom and Iron Man Christmas ornaments, one in silver and the other in gold, referring to the characters. The picture was captioned "Silver & Gold..." View this post on Instagram Instagram PostAvengers: Doomsday will mark Robert Downey Jr.'s official return to the Marvel Cinematic Universe, but this time he won't be back as Iron Man, whom the fans have loved for so long. Instead, he'll be returning as Doctor Doom.Along with Doctor Doom and Captain America, Avengers: Doomsday is also set to feature:Chris Hemsworth (Thor)Anthony Mackie (Sam Wilson)Sebastian Stan (Bucky Barnes)Letitia Wright (Shuri)Paul Rudd (Scott Lang)Tenoch Huerta Mejía (Namor)Ebon Moss-Bachrach (Ben Grimm)Simu Liu (Shang-Chi)Florence Pugh (Yelena Belova)Kelsey Grammer (The Beast)Lewis Pullman (The Sentry)Danny Ramirez (Joaquin Torres)Joseph Quinn (The Human Torch)David Harbour (Alexei Shostakov)Winston Duke (M'Baku)Hannah John-Kamen (Ghost)Tom Hiddleston (Loki)Patrick Stewart (Professor Xavier)Ian McKellan (Magneto)Alan Cumming (Nightcrawler)Rebecca Romijn (Mystique)James Marsden (Cyclops)Channing Tatum (Gambit)Pedro Pascal (Mister Fantastic).The list is long and iconic, which explains exactly why Avengers: Doomsday is the biggest release of 2026. So, every single piece of teasing information about the release is being eaten up by fans, be it a trailer featuring Steve Rogers or a simple Christmas ornament reveal from Robert Downey Jr.The film, set to hit theaters on December 18, 2026, is directed by the longtime Marvel collaborators Joe and Anthony Russo.Keep reading Soap Central for more such interesting insights into your favorite upcoming releases!