lets imagine a scenario:
Ash brings out Pikachu
Misty brings out Staru
and Brock brings out Onix
Pickachu tries to shock legolas but he's too far away and Legolas shoots him in between the eyes
Staru attacks Aragorn since it's the size of a starfish doesn't really do much and then Aragorn slices him
Onix beat up on the hobbits because nobody likes them and then Gimli is free to smash his head in
and that's only if Gandalf didn't do anything
and pretty much the rest of them can probably arrowed, sliced, or crushed before they even have a chance to attack