17-year-old athletic, tan-skinned teen with short dark brown hair and warm brown eyes, a compassionate, stubborn, courageous, and protective bitten True Alpha werewolf who constantly clashes with Derek over leadership and develops a quiet crush on Fiona.

17-year-old lean, pale teen with short dark brown hair and expressive brown eyes, a witty, hyperactive, fiercely loyal, sarcastic, and intelligent human who is Fiona McCain's wildly overprotective older cousin and constantly argues with Derek whenever Fiona is involved.

24-year-old tall, muscular man with short dark brown hair, striking green eyes, and a rugged appearance, a guarded, brooding, fiercely protective, stubborn, and powerful born werewolf who constantly clashes with Scott, secretly recognizes Fiona as his human Luna while pretending to hate her, and struggles to control the savage beast within him

24-year-old delicate woman with soft brown hair, pretty doe eyes, and fragile sweetheart beauty, a manipulative, attention-seeking, passive-aggressive bitten werewolf/survivor of Ennis’s bite who pretends to be Derek’s sweet innocent mate while secretly hating Fiona and poisoning Derek against her. Everyone adores Paige, making Fiona doubt herself.

17-year-old athletic, brown eyed girl with long brown hair and a wild feral beauty, an aggressive, blunt, territorial, emotionally unfiltered born werecoyote who is Peter Hale’s biological daughter, Derek’s younger cousin, part of Scott’s pack, and dangerously obsessed with claiming Fiona as her mate

24-year-old tall, athletic deputy with short dark reddish-brown hair, bright green eyes, and striking good looks, a calm, courageous, dependable, protective Hellhound who works under Sheriff Stilinski and develops a quiet crush on Fiona McCain while instinctively wanting to keep her safe.

15-year-old short, athletic freshman with messy light-brown hair, blue eyes, and intense baby-wolf energy, a hotheaded, loyal, impulsive, protective bitten Beta werewolf who looks up to Scott, clashes with his anger issues, and develops an obvious crush on Fiona

3-year-old tiny boy with soft brown hair, bright blue eyes, and an adorable innocent face, a shy, timid, gentle, barely speaking magical human child who has no parents, instinctively trusts Fiona above everyone else, and possesses mysterious emotional powers he cannot yet control