Felisha Terrel as Kali -Werewolf-
Kali was an Alpha werewolf, a member of Deucalion’s Alpha Pack and a secondary antagonist of Season 3. She was one of the most dangerous Alphas and used the claws on her feet to fight in a martial arts form of combat. Kali was Deucalion’s right hand in his Alpha pack, though Deucalion mentioned later, she joined so she could be with Ennis, implying she and Ennis were involved with each other. Kali was ruthless, arrogant, sadistic, cowardly and had no remorse for her actions; like Deucalion and Ennis, Kali murdered her entire Pack to add all their power to hers, which she states felt “liberating” and she was responsible for the death of Erica. After their pack’s battle with Derek’s Pack, Kali is shown to be worried over Ennis’ condition from his fight with Derek. With Aiden and Morrell’s help, they get Ennis to Deaton’s clinic for treatment. She is devastated when Deucalion reports that Ennis has died from his wounds (in truth Deaton had actually saved Ennis, but Deucalion killed him to entice Kali into coming for Derek to further his plans for Derek and Scott). Kali eventually fought Derek one-on-one at his loft, having Ethan and Aiden hold Derek’s girlfriend Jennifer Blake hostage and disabling the trap Boyd had set with the electrified water. During the fight, Kali gets a hold of Boyd and has Derek inadvertently kill him so to have him absorb Boyd’s powers with an ultimatum: Derek has to join their pack by the full moon or she would kill him and all of his pack in repentance for Ennis’ death.
In the episode “The Overlooked”, when the Alpha pack began hunting the Darach which is actually Jennifer, it’s revealed she is really Julia Baccari, Kali’s former Emissary. When Deucalion confronted her, Kali admitted she’d attempted to kill Julia, as part of killing her entire Pack in order to join the Alpha Pack, but she’d loved Julia and was unable to do it in the end and left her to die. Kali felt genuine remorse for this. The Alphas attempted to kill Jennifer, but were foiled by Scott and his allies. In the mid-season finale, she and Aiden show up at Derek’s loft to kill Derek, only to have their plans foiled by Ethan – who betrayed them. Kali demands to know where Derek is. Aiden is quick to join his brother after she threatens Lydia. Kali confronts Aiden over his loyalties when he becomes violent in his supposed defection. However, this turn of events is interrupted by Jennifer, who breaks into the loft through the glass roof. Kali takes her on, but is overpowered. Jennifer confronts Kali about her new glamored form, asking her what it takes to be able to look normal to spite Kali as the malicious Alpha had ruined her real face when she’d attempted to kill her. Kali fires back saying she doesn’t care, but Jennifer darkly responds saying “it takes power. Power like this”, and uses telekinesis to levitate shards of the broken glass off the floor. Kali shows fear at this display, but ultimately refused to back down in arrogance and screams she “should’ve ripped (Julia’s) head off”, and Jennifer fires the glass shards into Kali’s body, violently killing her.