Can someone tell me on how to do it? and give the script? coz im making each team have different dialog. Red Team have marine and cyborg dialog and blue team have flood dialog.

What about Ambush? Two different bipeds for the players, even if one team isn't completely one kind of biped.

The game does not allow for seperate bipeds on different teams. You can make permutations of the biped model but you can not control which permutation the players get.

Oh. It's still pretty close, isn't it? I mean, you can just die/restart/change teams/some other way of refreshing your appearance until you get the biped you want, right?

I had a topic ago about different bipeds for each team. Lonewarrior suggested different permutations.

Yes, but as pointed out by Destroyer it wouldn't sync. And there is a way to make sure what player gets the certain perm, but again. If a player leaves, then the perms will change for other players, and since holding players in a match and not letting them leave is something called Imprisonment then it will never happen, also because the game's engine dont allow it, and theres no script for it.