For funsies, a random assortment of animated characters to take on the live action MCU folks. All animated characters are their anime/cartoon versions, not manga. All MCU characters are their movie versions, not comics.
Captain America
Ironman
Hulk
Thor
Falcon
Black Widow
Hawkeye
Quicksilver
Scarlet Witch
Vision
War Machine
Black Panther
Ant-Man
Spider-Man
Winter Soldier
Drax
Gamora
Rocket
Star-Lord
Groot
Mantis
Quake
Ghost Rider
Dr. Strange
Ancient One
vs
Yomiko Readman (Read or Die)
Revy (Black Lagoon)
Agito (Origin)
Hei (Darker than Black)
Kyouma Mabuchi (Dimension W)
Ashitaka (Princess Mononoke)
Queen Elsa (Frozen)
Kim Possible (Kim Possible)
Danny Phantom (Danny Phantom)
Rex (Generator Rex)
Spike Speigal (Cowboy Bebop)
Motoko Kusanagi (Ghost in the Shell: Stand Alone Complex)
Godou Kusanagi (Campione!)
Priss (Bubblegum Crisis: Tokyo 2040)
Mugen (Samurai Champloo)
Samurai Jack (Samurai Jack)
Robin (Witch Hunter Robin)
Saya (Blood +)
Gene Starwind (Outlaw Star)
Ryu (Ronin Warriors)
Armitage (Armitage: Duel Matrix)
Howl (Howl's Moving Castle)
Goemon (Lupin III)
Sousuke Sagara (Full Metal Panic!)
Edward Elric (FullMetal Alchemist)