Erich: Memorable offscreen characters- Charlie from Charlie's Angels
Michael S.: 3D upgrades for old movies - 2001 : A Space Odyssey could be an even greater trip! Imagine the monkey's am, the monolith or those weird colors coming at you.
Mike R: Flunkies with monosyllabic names - Not really a flunky, but a secondary character : Grawp, Hagrid's giant half-brother from the Harry Potter films.
Dave: make a superhero team: horror icon, precocious sitcom kid, female protagonist from a Rom com,talking animal.
Here we go:
Lisa Simpson (don't watch any sitcoms, hope she counts)
Amy from Chasing Amy
Kermit The Frog
Team Name - Rainbow (considering we have Kermit's famous song, a lesbian and Lisa who has to love rainbows. Freddy doesn't really fit)
Well Freddy can appear in your dreams and kill you.
Lisa is very bright and could be the planner, the inventor and could also out trick the baddies.
Amy is a graphic artist so she could draw stuff that would then attack. or she could use her raspy voice and scream hurtful at the enemy.
As for Kermit... I don't know, my guess is that he would easily get killed.