The Sinister 6 Founding members:

Doctor Octopus (Engi): Dr. Smash
Sandman (Demo):
Mysterio (Medic):
Electro (Pyro): Bluemmy
Kraven the Hunter (Heavy):
Vulture (Soldier or Sniper):

Sinister Substitutes:
Mentos (Soldier)

Helpless Hostages:
J. Jonah Jameson: Vana
Betty Brant: Emily
Aunt May: Chonk
Uncle Ben: Luggnuts