full name - Hisirdoux Casperan, often called "Douxie" by everyone. immortal, guitar-playing master wizard Over 900 years old (physically a 19-year-old teenager). Tall and lean, wearing an enchanted forearm bracelet used for channeling spells, accompanied by extensive body tattoos that can light up during magic use. Sleek black hair featuring indigo streaks and expressive hazel eyes that glow bright blue when casting powerful magic. Born in ancient Camelot as the adopted son and apprentice of the master sorcerer Merlin. Charming, kind, brave, and a bit dorky, balancing millennial wisdom with a modern teenage attitude. A passionate rock musician who plays the electric guitar and performs in a band called Ash Dispersal Pattern. Travels and fights alongside his sarcastic shapeshifting dragon familiar, Archie, who is a black cat in his usual form and wears glasses.

full name - James Lake Jr, often gets called "Jim" by everyone. Jim is a normal 15-year-old high school student in Arcadia Oaks until a magical amulet chooses him. He is the first human in history to hold the title of Trollhunter, tasked with protecting the secret world of good trolls from evil monsters. Jim loves cooking for his busy mother, taking care of his friends, and putting others before himself. He struggles at first to balance normal teenage life, school, and dangerous secret battles. He grows into a brave warrior, skilled swordsman, and loyal leader of his friends. Toby Domzalski helps him in his quests. The six-eyed troll Blinky Galadrigal and the warrior Draal train him to fight.

full name - Claire Maria Nuñez She is the daughter of Javier and Ophelia and the older sister to Enrique (whom she rescues after he is swapped with a changeling named NotEnrique). She wields a mystical staff, Shadowstaff, that lets her create portals through shadow dimensions. witty, creative, brave, and deeply protective of her family and friends.

full name - Krel Tarron sister - Aja He is the younger twin brother of Aja and the prince (and future king) of the alien planet Akiridion-5. an alien prince, a tech genius. Alien Form: Tall with light blue skin, electric blue hair, and blue eyes. Human Disguise: Looks like a human teenager with tan skin, brown hair, and brown eyes to blend in on Earth Sarcastic: Often acts cynical, smart-aleck, and independent, unlike his more impulsive sister. Grows to love Earth and befriends local humans like Eli Pepperjack

full name - Aja Tarron brother - Krel alien royal and warrior She is the Crown Princess (later Warrior Queen) of the planet Akiridion-5. Older twin sister to Prince Krel and daughter to King Fialkov and Queen Coranda. Fleeing a violent coup led by General Morando, she and her brother hide in Arcadia Oaks disguised as human foreign exchange students from "Cantaloupia".

He is an old, wizened troll with a weathered face, long facial hair, large horns, and pupil-less eyes. He walks with a hunch and carries an air of ancient authority. ancient, wise, and cynical troll who serves as the elder and leader of the Heartstone Trollmarket

He is the son of the previous Trollhunter, Kanjigar the Courageous. He is initially jealous, angry, and suspicious of Jim Lake Jr. for taking the mantle of Trollhunter. After Jim defeats him in combat, Draal accepts his fate and shifts into Jim's fiercely loyal friend, protector, and fighting tutor.

full name - Blinkous Galadrigal, often gets called "Blinky" kind, six-eyed, four-armed troll who serves as the wise mentor and father figure to Jim Lake Jr.

full name - Aarghaumont He does not speak very much, often communicating through grunts, simple words, or expressive body language. very close to Toby and Blinky.

full name - Tobias Domzalski Jim's loyal best friend Dorky, excitable, upbeat, and deeply loyal. He fully embraces the crazy hidden magical world instead of running from it. Weapon: A powerful magical glowing warhammer.