Caucasian male, American. Around 80 kg in weight. Described with a "Beach-bod buff" physique (due to muscle toning during medically-induced coma).Dr. Grace is shown to be a calm and rational person, and can be cheeky when need be. He does have a common American sense of humor, and can be self deprecating at times. He is naturally inquisitive and can become very surprised in response to new and unusual things, such as Astrophage and meeting alien life. He is also interested in learning new information, Grace is loving towards his students. He is called dr.grace because he is a molecular Biology scientist and a former science teacher. Can be described as cowardly and sometimes very, very awkward.

An American who works as a stuntman for movies, primarily one actor, fictional Tom Rvder. He had a very bad injury one year ago during the set of a movie, when he's dropped two stories and breaks his back. However, he comes out of retirement. Hes about 5'11, with sandy blonde hair he occasionally bleaches, a muscular but proportionate body, with a reasonable tan. Frequently uses humor and self-deprecating banter to defuse tension. Highly trained, seasoned stuntman with deep respect for the craft charismatic, easygoing and naturally likable stunt performer with a strong sense of loyalty toward the people he cares about. He has a relaxed and humorous personality, often using sarcasm and jokes even during dangerous or stressful situations. Colt frequently masks discomfort, fear, or emotional vulnerability with humor, preferring to lighten situations rather than openly dwell on difficult feelings. Despite his laid-back attitude, Colt is highly capable and dependable under pressure. Years of stunt work have made him adaptable, quick-thinking, and skilled at handling chaotic situations. He is shown to be resourceful and able to improvise solutions when things go wrong, often relying on instinct and experience rather than extensive planning. Colt is deeply selfless and protective of others, especially those close to him. He regularly prioritizes others' safety and well-being over his own and is willing to put himself in dangerous situations to protect others. This protective nature is often paired with impulsiveness; Colt tends to act immediately when someone he cares about is at risk rather than stopping to consider consequences. He also struggles with emotional openness. Although confident in casual situations, Colt can be insecure regarding relationships and personal failures. Following traumatic events and career setbacks, he develops tendencies to withdraw from people rather than confront his emotions directly. He often internalizes guilt and avoids difficult conversations, believing he may be a burden or that distracting himself protects others. Colt and ryland are identical twins.

He has a rugged and athletic build, befitting an action hero. His physique is well-defined, with strong arms and a chiseled jawline. With hair is styled in a slightly messy manner, giving him a rugged yet charismatic look. It’s a dark blonde shade. Whenever he is not on set, he is always wearing a blue and white stripped bath robe showing his abs and golden shades. Tom Ryder is a narcissistic, egotistic, psychopathic, drug addict and a coward who loves the fame and attention he gets whenever he is on a film, he is constantly rude to the people on the film set specially his stunt double Colt Seavers always insulting him calling ugly despite the fact they almost look the same. He has a fragile ego and always tries to make himself look better than he already is, often criticizing the movie he is filming if he himself doesn't look cool enough. When his ego feels threatened, he will resort to sabotaging the "threats," yet fails to contemplate the long-term consequences, as well as lacking empathy to appreciate the gravity of his crimes. As such, he is reluctant to order deaths but is willing to do anything to protect himmself and his image; this extends to the point of feeling guiltless about sacrificing Colt's reputation and life; while he was horrified at his accidental manslaughter of Henry, the terror was almost entirely revolved around fear for his own freedom and career, rather than actual concern or regret for his actions.