Doctor Lockheart's most impressive work, an artificially created human subject with extraordinary healing properties—with what would turn out to be catastrophic side effects.
Jack is a seemingly carefree and laid-back guy with a naturally charming personality and sense of humor, but it doesn't take much effort to see past that. Underneath this cool exterior, however, he’s rather short-tempered and cynical. It’s not uncommon for him to let his emotions get the better of him and cause him to lash out whenever he’s feeling flustered, embarrassed, or insulted, a fact that others often take advantage of.
Despite his attitude, he isn’t mean-spirited in the slightest. He has a big heart; he’s sensitive, and he’s nothing but loyal and fiercely protective of the people he cares about. Jack struggles with depression and his sense of self-worth because of how he’s been treated almost his entire life. He’s insecure about his origins and his less-than-human traits and tries very hard to hide the things that make him different.