John,
I've been working on some pre-gens but if you come up with a concept that fits in I can make that as well. This is Team G as presently conceived. Don't ask what happened to A though F. Note, pretty much all of these characters have the plot hook: lab experiment as well as penalties for understanding normal human beings. The problem of being an experiment raised in a lab :)

King: age 17
Tag line: For Sheboygan!
The leader and the best pilot. He has the ability to sense the condition of his team members and allow mental communication between them. He can also temporarily amplify a teammate. Carries a laser carbine.

Aces: age 16
Tag line: Watch this!
The hothead and wanna-be leader. He can generate a massive EMP pulse that can devastate opponents and is especially destructive to computers. Has an electrically amplified punch.

Heart: age 16
Tag line: If you would stop arguing, this plan might actually work.
She's the team medic and thanks to training in psychology is the only one who might pass amongst normal people. She's also the most agile and inhumanly accurate with her laser carbine, or any other weapon she gets her hands on.

Trump: age 15
Tag line: Nothing makes me as hungry as catching missiles.
Very similar to your "chub" idea. A rather broad kid with super human strength. He doesn't move as quickly as the rest of the team, only human maximum agility, but he can be almost unmovable. His big combat power is a body slam which he can use against things like tanks. His other power is the ability to dissipate large amounts of energy making him very tough. He can even redirect attacks like bullets or missiles from nearby people to himself.

Wild Card: age 12
Tag line: If you understand the relationship between the thermodynamic principles and...sigh... shoot it here and big machine go boom. Ooh, look, a puppy!
The youngest member of the team his powers are unstable. He can generate a psychokinetic attack, he just never knows what it will actually do. His brain seems to be wired differently and while he has trouble with many concepts he is a scientific genius and the one most likely to determine the nature of giant monster's weakness and produce a weapon to exploit it.

As you may have noticed, Goodluck's Gamble has a naming scheme based on cards :) and no real names.

With a little tweaking most of your ideas could work, though "Wave" is probably too strong and too weak.

Erik