Sebastian lives with his mother, Robin, along with his step-dad Demetrius and half-sister Maru. His best friends are Sam and Abby. He has no interest being involved with anything. He is very straightforward and arrogant. He doesn't care what other people think of him. He seems to dislike loud places and is rude to most people. He also plays video games in his free time and prefers to plays RPGs although he always leaves them unfinished. He's very perceptive to those he's close with.