Ben 10 and the Justice League

Ben 10 and the Justice League is a crossover RPG Game featuring Ben 10 as the main protagonist.

Summary
Knowing that the Justice League will always defeat him, Lex Luthor decides to bring Ben 10 to this universe and convinces him that Superman is a threat. Will Ben Tennyson find out the truth?

Team Ben 10

 * Ben 10: The main protagonist of the game.
 * Powergirl: Coming from another universe, she joins Ben 10 and falls in love with him.
 * Gwen Tennyson: Ben's cousin. Her magic spells are pretty useful.

Justice League

 * Batman: Fearing that his teammates could cross the line sooner or later, Batman prepares his contingency plans.
 * Batgirl: One of Batman's sidekicks, Barbara Gordon's speciality in computers can help Batman and Ben 10.
 * Cyborg: His technology allows him to perform various tasks.

Supporting Characters

 * Max Tennyson: Ben and Gwen's grandfather. He produces equipments for the missions.
 * Nightwing: One of the few Titans who will join Ben 10 in his mission.
 * Jonathan Kent: Coming from the future, the son of Superman decides to help Ben 10 against his father.
 * Superboy: Conner Kent joins Ben 10 in his battles in order to find Miss Martian
 * Red Robin: Tim Drake shows his determination to help Batman when something prejudices him.