Luck

"I am like the sun. Without my shine, without the warmth that radiates from me, people cannot thrive. I am the muse, the inspiration, the glorious blessing sent from the Gods themselves for people to admire and love."

- Luck, the pirate with a healthy self-esteem Petra said in her comic's discord server, in regard to Luck's pronouns: "Characters have referred to Luck with various pronouns in the comic! I’ve personally used she and they in social media about her, and Luck as a character doesn’t care one bit what people label her as, and this might be wandering into spoiler territory but... Luck does not have any understanding or interest how the society and human culture works lol because she thinks of herself above it all." Luck is the "human" form of the legendary Maldoror

Personality
Luck is the opposite of humble. They delight in the trouble they cause, and have no qualms about menacing others. Repeatedly they're shown to give little consideration to the feelings of others, looking out solely for themselves.

"They bristle at the thought of being a spoiled princess's pet, as they are the terrible Maldoror-end of humanity! However they do enjoy the idea of being fed and praised on the journey to Swiddentown, and decide to stick around" - Petra in a few pages recounting what has happened so far in Tiger Tiger before the chapter, "Rot".

Appearance
Luck has been shown to take a number of shapes, though primarily they take the shape of a short haired human with an eldritch tattoo or a not quite right seal. "But it feels more like a lizard! And it's oddly cool to the touch," Ludovica said when commenting on how she expected Luck's 'seal' form to feel. Luck's seal form, aside from having lizard-like cool skin, also has more limbs than it should, though this is not commented on.

Abilities
Luck can come back from the dead, though it could be argued they never died in the first place, not being injured by lack of oxygen or a sudden weight on their neck that would have snapped it in a normal person. Their tattoos have a magical demonic property, shifting around and becoming more monstrous as Luck does. She can shapeshift into a myriad of forms, though has largely taken on the form of a human and of a seal. Biting Ludo in the hand has caused an inexplicable link between the two that surprised even Luck.