He is already a Marvel legend for his work across theInfinity Sagaas Tony Stark/Iron Man.

It will be his 11th MCU appearance and his first sinceTony Stark’s sacrificial deathin 2019’sAvengers: Endgame.

Whether Downey’s Doom comes from that universe or another is a mystery.

Kang, Jonathan Majors, Avengers 5

Avengers: Doomsdaywill debut in theaters on May 1, 2026.

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