He usually likes to fight first and ask questions later, and has assembled quite a Rouges Gallery. Spider-Man (AKA Peter Parker) is a free-willed, witty teenager with a strong sense of Justice. Up to 6 characters can be on-screen at the same time, and all 24 stages will support all of these characters, real life players or CPU's.
Another diffrence from Smash Bros is that every characters has a 'Special Trait' that gives them a unique edge in battle. However, instead of %'s, the players have a simple Health Bar. The game is similar to games like Super Smash Bros, where up to six players are on-screen beating each other up and sending them flying across the stages. With that goal in mind, the Tournament begins. With that, he sets up a 'Secret Tournament' in which the winner gets whatever they wish for.
He decides to use the DC Universe he's heard a little bit about, then plucks 5 other heroes from other universe in too. In the Marvel universe, The Grandmaster is getting bored of his own Universes heroes and villains fighting each other, and so decides to find another universe.
