LINCOLN LOUD: Falls under On & Off, Heroic Jerks, Mischievous, and even Chaotic Neutral. In (almost) every episode, he does something selfish. And while he does regret it, he goes and does another selfish thing in the next episode.
LILY LOUD: Falls under Mischievous. Also, nearly everyone outclasses her standards.
HENRY HART: Falls under Heroic Jerks. Also, he can become a real jerk, even arrogant in some episodes.
ALVIN SEVILLE (LIVE ACTION): Falls under Outright, Arrogant, Mischievous, and Good Hearted B******s.
SIMON SEVILLE (LIVE ACTION): Falls under Mischievous and Anti-Hero.