Quoting this from another person in another board:
Kobe Bryant = Captain America
The Super Soldier, the unquestioned leader of the team, a man out of time who's still at the top of his league and endured far better than any other of his generation.
Dwight Howard = Iron Man
Loves to have fun, great strength, great durability, literally made of steel, inpenetrable defender, capable of flight.
Pau Gasol = Thor
From another planet / country, God of Thunder and the Basketball God of Spain, long hair with a foreign royal sounding dialect, a big who can attack from above.
Steve Nash = Hawkeye
Smallest guy on team, best field / court vision, lethal from long-range, started as a villain before joining his new Avengers / Lakers team.
Metta World Peace = Hulk
Big strong bruiser, smashes anything he hits, you wouldn't like him when he's angry... but he tries to control his anger because deep down he really doesn't want to get angry.
Antawn Jamison = Black Widow
Can do everything, lethal from long-range and also close contact, severly underestimated because of his / her more powerful teammates.
Mitch Kupchack = Nick Fury
'Nuff said, the main reason this team was Assembled in the 1st place, to avenge what the evil Loki (David Stern) has done to us last season.