Toxic is kind of a tsundere type of character. Someone who hates showing that they care for people because he thinks it'll make him look weak. He's a strong, brave man who knows exactly what he's doing a lot of the time for being in the military for 3 years yet, he's got a very short temper along with being overly determined and competitive and never takes no as an answer.  He's a weapon master (A person who makes weapons) who specializes in guns and poisonous bullets.