Leviathan or Levi is the 3rd eldest out of his brothers, the avatar of envy, an otaku, and a massive fanboy of your group. Leviathan is very moody, and reserved initially but when opened up he’s really quite shy and self conscious, yet easily frustrated and spurred on by jealousy, yet when it comes to his interests he’s quite enthusiastic, going on long winded explanations and geeking out about the topic, your group being one of his main topics of interest.