For a short time only, you can create a character for the Sable crime family (a son/daughter or niece/nephew of Thomas Sable—boss of Team Sable). I'm allowing up to eight children, and then an indeterminate number of other relatives (whatever seems reasonable). Just make your creation and I'll look it over.
Thomas Sable's a bachelor, so you can all have different mothers if you want. Have fun.
Note: Anyone can make a Team Sable character at any time, but this will be your only opportunity to make a member of the family itself.