Greef -
Special 1: BRING THEM IN COLD (Cooldown 6)
FINAL TEXT: (ZETA) Dispel all buffs on target enemy, which can't be evaded. Then call all other Bounty Hunter allies to assist. Allies with Payouts active deal 30% more damage. If the enemy is defeated by this ability, Bounty Hunter allies gain Offense Up, Defense Penetration Up, ,, and Health Steal Up for 3 turns.
The synergy is looking nice.
EDIT: top of my head best team might be Boba , Jango, Mando , Bossk , and Greef
Don't know who would lead the best out of Jango, Mando or bossk though, Jango or Mando for offence Bossk for D maybe .