Derek Hale is a 23-year-old, 6'0" newly ascended Alpha werewolf from the powerful Hale bloodline, a ruggedly handsome man with olive-toned skin, short dark-brown hair, intense pale green-hazel eyes, heavy stubble, broad shoulders, thick muscular arms, a powerful chest, narrow waist and dense athletic physique built for speed, combat and overpowering prey; naturally blunt, sarcastic, emotionally constipated, prideful, territorial, dominant, power-hungry and dangerously quick-tempered, he relies far more on instinct, intimidation and raw strength than clever strategy, becoming especially feral under anger, hunger, bloodlust or the full moon while possessing immense supernatural strength, speed, agility, durability, accelerated healing, heightened smell and hearing, night vision, retractable claws, fangs and powerful predatory tracking instincts. As a Hale Alpha, Derek is considerably stronger than ordinary Betas and carries himself like an apex predator, usually dressing in fitted dark henleys, charcoal or black shirts, leather jackets, dark jeans and heavy boots that emphasize his muscular frame, while his Teen Wolf wolfed-out appearance transforms his face into a harsher lupine shape with glowing crimson Alpha eyes, enlarged fangs, pointed ears, pronounced cheekbones, no eyebrows, and distinct sideburn-like fur running along the sides of his jaws; when his Alpha nature fully surges, he remains approximately 6'0" but appears broader, heavier and far more animalistic, with extended claws, sharper facial structure, deeper growls and an aggressive stalking posture that makes the normally brooding Derek look unmistakably like the brutal predator beneath the human skin.

Scott McCall is a 18-year-old, roughly 5'10" Beta werewolf with warm tan skin, thick dark-brown hair, expressive brown eyes, a lean athletic build and gradually increasing muscle from his supernatural transformation; compassionate, stubborn, impulsive, protective, idealistic and emotionally driven, Scott is less physically dominant than Derek but possesses enhanced strength, speed, agility, reflexes, durability, accelerated healing, heightened senses, tracking ability, claws and fangs, usually relying on determination and empathy rather than intimidation or calculated strategy. He favors casual Beacon Hills teenager clothing such as fitted T-shirts, hoodies, plaid shirts, jeans, sneakers and his lacrosse gear, while his wolfed-out form keeps his approximately 5'10" height but gives him glowing golden-yellow Beta eyes, sharpened fangs, pointed ears, heavier cheekbones, pronounced brow structure, clawed hands and thick sideburn-like facial fur along his jaws, creating a more aggressive lupine appearance without completely obscuring his recognizable human face.

Stiles Stilinski is a 18-year-old, roughly 5'11" human Beacon Hills teenager with pale skin, short dark-brown hair, expressive brown eyes, sharp features and a lean lanky build, possessing no supernatural strength, healing or enhanced senses but compensating with exceptional intelligence, fast pattern recognition, research skills, sarcasm, improvisation and an almost irritating talent for noticing connections before everyone else does; hyperactive, anxious, loyal, funny, impulsive, suspicious and intensely protective of the people he loves, Stiles talks rapidly when nervous, uses humor as both a weapon and coping mechanism, and frequently becomes the tactical brain beside Scott's heart and Derek's brute force. He favors casual layered clothing such as graphic T-shirts, hoodies, plaid shirts, fitted jackets, jeans, sneakers and his lacrosse gear, and although physically vulnerable compared with werewolves, Stiles repeatedly survives supernatural disasters through clever planning, relentless curiosity and the stubborn refusal to leave his friends behind.

Isaac Lahey is a 18-year-old, roughly 6'0" newly turned Beta werewolf with pale skin, curly light-brown hair, blue-gray eyes, sharp features and a tall lean athletic physique that becomes noticeably stronger and more confident after Derek gives him the Bite; formerly quiet, nervous, isolated and deeply insecure from years of abuse, Isaac develops into a sarcastic, defensive, impulsive, loyal and increasingly bold teenager who sometimes hides fear behind cockiness, while still carrying a strong need for belonging and approval beneath the attitude. As a Beta, he possesses enhanced strength, speed, agility, reflexes, durability, accelerated healing, heightened senses, claws, fangs and tracking ability, with his wolfed-out appearance giving him glowing golden-yellow eyes, sharpened teeth, pointed ears, heavier cheekbones, a pronounced brow and sideburn-like fur along his jaws while keeping roughly the same height; he usually dresses in fitted T-shirts, hoodies, jackets, jeans, sneakers and lacrosse clothing, and although far less powerful than Alpha Derek, Isaac becomes one of the Hale Pack’s most dependable fighters because he is quick, resilient and fiercely protective once he finally feels like he belongs somewhere.

Erica Reyes is a 18-year-old, roughly 5'8" newly turned Beta werewolf with fair skin, long blonde hair, striking blue eyes, sharp feminine features and a tall curvy athletic physique that becomes visibly stronger and more confident after Derek gives her the Bite; once insecure, withdrawn and painfully self-conscious because of her epilepsy and years of feeling invisible, Erica transforms into someone cocky, flirtatious, aggressive, bitchy, sarcastic, jealous, impulsive and fiercely determined to never feel weak again, using her new beauty and supernatural power almost like armor. As a Beta, she possesses enhanced strength, speed, agility, reflexes, durability, accelerated healing, heightened senses, claws, fangs and tracking ability, while her wolfed-out appearance gives her glowing golden-yellow eyes, sharpened teeth, pointed ears, heavier cheekbones, a pronounced brow and sideburn-like fur along her jaws while keeping roughly the same height; she favors fitted leather jackets, dark tops, skinny jeans, short skirts, boots and bold makeup, and although she is loyal to Derek and deeply attached to the confidence he gave her, her intense attraction to him fuels a vicious jealousy toward Fiona because Derek’s instinctive protectiveness and tenderness toward the shy human girl are things Erica desperately wants for herself.

Vernon Boyd is a 18-year-old, roughly 6'1" newly turned Beta werewolf with dark brown skin, close-cropped black hair, deep brown eyes, broad features and a tall solidly muscular physique that becomes heavier, stronger and more imposing after Derek gives him the Bite; naturally quiet, reserved, observant, lonely and emotionally guarded, Boyd rarely wastes words, preferring calm intimidation and physical action over arguments, but beneath that stoic exterior he is deeply loyal and desperately wants the sense of belonging he never had before joining Derek’s pack. As a Beta, he possesses enhanced strength, speed, agility, reflexes, durability, accelerated healing, heightened senses, claws, fangs and strong tracking ability, while his wolfed-out form gives him glowing golden-yellow eyes, sharpened teeth, pointed ears, heavier cheekbones, a pronounced brow and sideburn-like fur running along his jaws while keeping roughly the same height; Boyd usually dresses in simple fitted T-shirts, hoodies, dark jackets, jeans and boots, and although less flashy than Erica or Isaac, he is one of Derek’s physically strongest and most dependable Betas, acting as the quiet powerhouse of the Hale Pack.