Laboratory - (Iron Man) A high tech laboratory where Tony Stark works
on his armor.
? - (Psylocke)
Swinging Bridge - (Wolverine) Swinging bridge over a waterfall. Pieces
of it break away, and when one character is KO'd it finally breaks. The
beaten contestant falls into the waterfall, while the victor lands safely on
a rock outcropping.
Merry-Go-Round - (Hulk) A wrecked merry-go round at a carnival.
Scaffolding - (Spider-Man) Both contestants fight on scaffolding
outside a Manhattan skyscraper.
Waterfront - (Captain America)
Waterfront (?) - (Juggernaut)
Hidden Base - (Magneto)
Underworld Lair - (Blackheart) Blackheart's underworld domain. Fire
engulfs the background of the stage, and silhouettes can be seen writhing in
agony.
Alien Desert - (Shuma-Gorath) A peculiar desert area. The skeleton of
a gigantic alien being can be seen in the background.
Orbital Base - (Dr. Doom) Doom's headquarters in outer space, utilizes
the same design as Magneto's base.
Death Shrine/Necropolis - (Thanos) The palace Thanos built for Death in
space. Large steps lead up to Thanos' throne, and two likenesses of death are
positioned at each side of the stairs. Mephisto is sitting on the stairs,
tossing a skull into the air and watching the action. The petrified bodies of
Thor, Giant-Man, Scarlet Witch, and Drax the Destroyer can be seen in various
places.