I'm going to start throwing up some characters to help get the ball rolling on this. Replace "Justice Dudes" with whatever the name of our Super Squad ends up being.
=======================
Arthur Meitz, aka ESCUTCHEON
Strength: 10 (+0)
Dexterity: 8 (-1)
Constitution: 30 (+10)
Intelligence: 12 (+1)
Wisdom: 12 (+1)
Charisma: 8 (-1)
Attack bonus: 5
Defense bonus: 0
Saving Throws: Toughness +10, Fortitude +10, Reflex -1, Will +1
Skills: Computers 2, Knowledge (Technology) 2
Feats: All-Out Attack, Interpose
Powers: Immunity 89 (Life Support, Immune to lethal and nonlethal physical and energy damage)***
Arthur Meitz was a socially inept teenager. His powers manifested one summer weekend after he graduated from high school. Spending the weekend alone at home, he went to sleep on Friday evening. Upon awakening, he discovered it was Monday afternoon. There was some kind of broken cocoon-like shell on the bed beneath him. He does not know what happened during the three days he slept.
Arthur began noticing strange things about himself. He never became tired, or sleepy, or hungry. Falling or stubbing his toe caused no pain. With some experimentation, he realized that there seemed to be nothing which could actually hurt him.
Immediately discarding his plans for college, he applied for membership in the Justice Dudes under the codename Escutcheon. Though they were initially leery of his complete lack of combat prowess, his total invulnerability became an asset to the team.
Escutcheon is immune to most forms of damage. He is still vulnerable to mental attacks, and he has no special protection against magic. Since he is no stronger than a normal person, he can easily be tied up and ignored by enemies. His body is in a sort of stasis. No amount of exercise will make him more muscular, and he does not appear to age. Although he is now 25, he still looks like an unpopular 18-year-old kid. Arthur is very sensitive about his appearance, and gets offended easily.
On missions, Escutcheon typically leads the charge to trigger any traps or expose enemy ambushes. He will put himself in the line of fire to protect his teammates whenever possible. He has been studying offensive martial arts to increase his usefulness to the team, although he is somewhat hampered in this by his physical limitations.
Escutcheon lives at Justice Dudes Base fulltime. Since he doesn't sleep or eat, he has no need for an outside identity or job. He usually mans the Danger Monitor while the other heroes are resting.
***Yes, the immunity is broken as hell. However, the GM can override it as needed. If the GM says he gets hurt by being punched by the Hulk, then he gets hurt (but not much!). Likewise, mundane energy sources like fire won't hurt him, but "cosmic" energy can, at the GM's discretion. Most enemies that have fought him before just ignore him and concentrate on his teammates, since Escutcheon isn't much of an offensive threat. In addition, he may never increase his Strength, Dex, or Con through experience - his body just doesn't change.