Downey Jr. and Pascal Trade MCU Roles in Halloween Costume Swap

WHO:

Deadline - Robert Downey Jr. and Pedro Pascal participated in the Halloween costume swap.

Deadline - Downey dressed as Mr. Fantastic, a character played by Pascal; Pascal dressed as Dr. Doom, a character played by Downey.

IJR - Robert Downey Jr. and Pedro Pascal swapped Marvel costumes; IJR identifies the characters as Mister Fantastic and Doctor Doom.

WHAT:

Deadline - Downey and Pascal traded their MCU roles for a paired Halloween costume.

Deadline - The article described the swap with the quote, “Costume Swap!”

Screen Rant - Downey’s Halloween celebration featured an Avengers: Doomsday crossover involving the characters in the world of Peanuts.

IJR - Downey and Pascal shared footage of their neighborhood trick-or-treating.

IJR - The costume swap highlighted the characters’ impending rivalry in Avengers: Doomsday.

WHERE:

IJR - Downey and Pascal’s shared trick-or-treating footage showed them in their neighborhood.

Deadline - Avengers: Doomsday is set to premiere in theaters.

IJR - Avengers: Doomsday is scheduled to open in theaters.

WHEN:

Deadline - Avengers: Doomsday is scheduled to premiere Dec. 18.

IJR - Avengers: Doomsday is scheduled to open in theaters in December 2026.

(UPDATED November 1, 2026 10:01 UTC)

Robert Downey Jr. and Pedro Pascal swapped Marvel costumes while trick-or-treating together. Downey dressed as Mister Fantastic, while Pascal became Doctor Doom. Their Halloween crossover previews the characters’ rivalry in Avengers: Doomsday.