JLA/Avengers: Ultimate Alliance: Worlds Collide/Unlock Characters

Main Storyline
These characters can be unlocked normally:
 * Starter Characters:
 * First Use: Batman, The Flash (Barry Allen), Superman, Wonder Woman
 * In-Slot. Defeat Hobgoblin in Chapter 2: Spider-Man (Peter Parker), Captain America, Green Lantern (Hal Jordan), Aquaman, Thor, Hulk, Iron Man, Falcon, Black Canary, Black Widow, Scarlet Witch, Quicksilver, Firestorm, Wolverine, Captain Marvel (Carol Danvers), Green Arrow, Hawkgirl, Crystal, Firestar, Agent Liberty, Atom
 * Chapter 2: Luke Cage, Miles Morales, Silk, Spider-Gwen, White Tiger
 * Chapter 3: Agent Venom, Spider-Girl, Venom
 * Chapter 4: Prowler
 * Chapter 5: Thing
 * Chapter 6: Human Torch, Invisible Woman, Mister Fantastic, She-Hulk.
 * Hub 1: Doctor Strange
 * Chapter 7: Commander Steel, Gypsy, Martian Manhunter, Steel, Vibe, Vixen
 * Chapter 8: Animal Man, Crimson Fox, Elongated Man, Metamorpho, Power Girl, Rocket Red
 * Chapter 9: Bloodwynd, Blue Beetle (Jaime Reyes), Doctor Fate, Doctor Light, Fire, Godiva, Guy Gardiner, Ice, Mister Miracle, Shazam
 * Chapter 10: Bronze Tiger, Geist, Mystek, Ray, Triumph
 * Chapter 11: Black Orchid, Deadman, Etrigan the Demon, John Constantine, Pandora, Phantom Stranger, Shade, the Changing Man, Swamp Thing, Zatanna
 * Chapter 12: Adam Strange, Hawkman, Katana, Mera, Stargirl
 * Chapter 13: Jon Kent, Superboy, Supergirl
 * Chapter 14: Azarel, Batgirl, Catwoman, Huntress, Nightwing, Red Hood, Robin
 * Chapter 15: Ant-Man, Giant-Man, Hawkeye, Hercules, Wasp
 * Chapter 16: Living Lightning, Machine Man, Mockingbird, Tigra, War Machine, Wonder Man
 * Chapter 17: Deadpool, Gambit, Iceman, Jean Grey, Nightcrawler, Psylocke
 * Chapter 18:
 * Chapter 25: Black Panther, Storm

Simulation Challenges

 * Deathstroke
 * Joker
 * Loki
 * Poison Ivy