Those with neither the desire to become heroes, or the wickedness to become villains.  Mostly, they just want to be left alone. Here are a few.

United States
Aura: living homeless in Atlanta.
Ivy: East Bay skater girl with a few problems.
The Gypsy King: wandering Bad Boy.

United Kingdom
Clover: good luck charm extraordinaire.
The Banshee: an innocent in a bad situation.

France
Seigneur du Fue: rich brat.