Suggestions by @batfan

Sandman (Flint Marko)

as Cameo fighters in Marvel battle

Helicarrier

as Stages in Marvel battle

BattleWorld

as Stages in Marvel battle

X-Mansion

as Stages in Marvel battle

Wakanda

as Stages in Marvel battle

Park avenue

as Stages in Marvel battle

Avengers Tower

as Stages in Marvel battle

Nova (Richard Rider)

as DLC cameos in Marvel battle

Rocket & Groot

as DLC cameos in Marvel battle

Absorbing Man

as DLC cameos in Marvel battle

The Spot

as DLC cameos in Marvel battle

Man-Thing

as DLC cameos in Marvel battle

Elsa Bloodstone

as DLC cameos in Marvel battle

Elektra

as DLC cameos in Marvel battle

Jessica Jones (Netflix)

as DLC cameos in Marvel battle

Ronan The Accuser

as Cameo fighters in Marvel battle

killmonger

as Cameo fighters in Marvel battle

Lizard

as Cameo fighters in Marvel battle

Ultron

as Cameo fighters in Marvel battle

Doctor Octopus (Dr. Otto Octavius)

as Cameo fighters in Marvel battle