I went with the first generation of Pokemon on this one because I love them.
Pokemon guide: Tony has Arcanine, Steve has Dragonite, Clint couldn’t decide, Bruce has Oddish, Natasha has Vuplix, Thor has Pikachu, and Loki… got Loki’d.
A beautiful series of pictures done by Geegeet on deviantart! Color coded pokemon backgrounds. Very nice.
If you like his art style, I suggest going there and browsing his gallery: http://geegeet.deviantart.com/