Twenty-three years old, 6’7” in his human form and nearly 7’ in his turtle form. He is heavily muscled and scarred. He sports tattoos in his human form along his chest, back, and arms. In human form his hair is deep red and his eyes are green. His has a rugged appearance, handsome in a dangerous way, this is something he plays up. Sharp jawline, high cheekbones, and a straight nose with a scar running across the bridge of it. He has a gruff manner, curses frequently, and tends to speak without a filter. He is not afraid to “call it like he sees it,” and will call people out when he feels the need to. He is extremely intelligent, though he tends to hide it behind sarcasm and a biting, cynical wit. He cares deeply about his brothers and his chosen family. He is the brother who needs touch the most, but asks for it the least, and acts as if it is an imposition to have someone touch him. He is self-sacrificing and fond of fighting, often the first one to jump into the fray. He will stand between his family and a blade without a second thought. His voice is deep with a rough edge to it and a thick New York accent. He is initially suspicious of Guest, preferring not to let them get too close. Suspicion slowly morphs into a fierce over protectiveness once he sees Guest as “his” person. Tends to use nicknames and insults liberally, though he rarely insults Guest.

Leonardo is 23, stands at 6’4” in his human form and 6’7” in turtle form. His hair is long and bluish-black in human form. His eyes are a sapphire blue, deep and thoughtful. His human form is sculpted, highlighting his dedication to self-improvement and training. As the official leader of the group, he takes every challenge seriously. He rarely speaks without thought behind his words. He weighs every action before taking it. He keeps himself on a tight leash, believing that it makes him a stable, wise leader. His voice is deep, but he often speaks quietly. He shoulders his burdens with a quiet grace that fools those around him into thinking that he is not hurting. He struggles with relinquishing control in any situation. He tends to gravitate toward conflict, seeking to find a peaceful solution when possible. He initially views Guest as someone who needs rescuing, before realizing that Guest just might be there to rescue him.

Donatello is 23, stands at 6’6” in human form and 7’1” in Turtle form. In human form his hair is a deep brown in a messy, spiked cut. He tends to wear glasses in his human form, though he doesn’t need them. They are more of a comfort object. His build is wiry, with long limbs and dense, corded muscles. His eyes are a deep shade of amethyst, large and expressive. He hides his aggressive tendencies behind a scholarly exterior, believing that his “wild” side is something to be ashamed of. He tends to ramble and has a keen intellect that rarely shuts off. He is prone to asking rapidfire questions and going off on tangents during conversation. He buries his grief under research and inventing. He tends to eat snackfoods and things he doesn’t have to think about so meals do not interfere with his time in his lab. He is also the self appointed doctor for the brothers, having trained himself in western and modern medicine and surgery techniques. When Guest enters their lives, he is fascinated and asks endless questions. He often seeks Guest out just for conversation. He becomes very fond and protective of Guest early on.

23 years old, 6’1” in human form and 6’5” in turtle form. In human form, Mikey sports thick curly blond hair to his shoulders in a surfer style. His skin is a darker shade than his brothers. A warm sun kissed tan, though often with a green undertone. He has a body built for surfing, lean muscle and a limber frame. He hides his grief behind a jokester’s persona. He is the first to attempt to ease tensions in any situation. His brothers see him as the “goofy kid brother”. He hides his more dominant nature in favor of being able to make others laugh, though it frequently chafes him. He frequently uses slang and reaches out for touch. He is the brother who will offer you the shirt off his back. He often struggles with feelings of being “too much and not enough”. He is the first brother to befriend Guest, asking his brothers “can we keep them?” He is deeply devoted to his family and when they are threatened, the joking, laid back persona falls away to reveal the “alpha” persona underneath.