The rumors are true – Avengers 5 is all about Doctor Doom. What’s more, an MCU fan favorite is playing him, leaving Marvel fans spiraling.

DuringSan Diego Comic-Con‘s Marvel Studios panel,Avengers 5was finally given an official name, now known as Avengers: Doomsday with the Russo Brothers confirmed to be steering the ship.

As Doctor Doom cosplayers were packed on stage for the announcement, a shocking twist revealed one of the MCU’s most iconic actors would be returning to take on the role.

Robert Downey Jr. is back, no longer as Iron Man but instead stepping into the shoes of Doctor Doom, telling Marvel fans that it was a “new mark” for the “same task.”

Robert Downey Jr. will star as Doctor Doom in ‘AVENGERS: DOOMSDAY’pic.twitter.com/8tpltPCaOA

“What can I tell you? I like playing complicated characters,” Downey Jr. said as fans absolutely lost it over the unexpected news.

While it will be at least two years before viewers can expect to see Downey Jr. back in costume in his new role on the big screen, many are already sharing their reactions and excitement to the “historic” announcement.

“I [f*** with] this so much, what a way to bring him back,”one person respondedon X (formerly Twitter). Anothercalled the newsthe “best surprise ever”, while athird saidthey couldn’t wait for Downey Jr. to “bring his Iron Man charm to the role of Doctor Doom.”

Many have been left with questions surrounding how the casting will be executed. Meanwhile, others have alreadybegun to theorizehow things will be explained within the MCU, pointing to the possibility that Downey Jr.’s Doctor Doom will be a variant of Tony Stark from a different timeline.

Related:

Related:

While little else is known about the upcoming fifth installment of the Avengers, characters fromCaptain America: Brave New World,Thunderbolts, andFantastic Four: First Stepsare confirmed to be facing off against the titular villain.

Check out moreupcoming Marvel movies and TV shows, as well asnew movies streaming.

Meera Jacka was a Senior Writer on Dexerto’s Australia team, specializing in Entertainment and trending content. She is a writing graduate and her expert coverage areas include Twitch, Kick, TikTok, YouTube, and viral news stories.