List of Big Bad Duumvirates

Television

 * Once Upon a Time
 * Tamara and Greg in the final six episodes of Season 2. They are actually minions of the Bigger Bad.
 * Rumplestiltskin, Maleficent, Cruella De Vil, and Ursula in Season 4B. Rumplestiltskin and Zelena also form one. However, Rumple is the clear dominant.
 * King Arthur and Zelena in Season 5A during the flashbacks.
 * The Evil Queen, Rumplestiltskin and Zelena form a triumvirate in Season 6A, though the Evil Queen comes out on top.
 * Drizella and Gothel in the first-half of Season 7.
 * Teen Wolf
 * Peter Hale and Kate Argent form one in Season 4. He's the schemer and she's the muscle.
 * The Dread Doctors in Season 5.
 * Gerard Argent and Tamora Monroe in Season 6B. She's his protège, but schemes and plots on her own. He essentially trains her to be his partner, rather than henchman.