Luck
Luck goes absolutely insane once he's sick. He outright refuses to stay in bed and his "FIGHT ME!" attitude gets even worse. He's attacked just about everyone in the Bulls at some point while sick, and no one likes to think back to the experience. Yet at the snap of a finger he becomes docile. It's sort of similar to Noelle's dual nature, but not quite. Whereas Noelle goes in stages of emotion, Luck just flip-flops between two extremes in nature. It seriously disturbs certain members of the Bulls.
What Luck does when he's sick varries on what extreme he's in. If he's in "FIGHT ME" mode, he spends his time tied, chained, and magicked to his bed while the few brave enough to venture into his room bring him food and medicine. He's only escaped once, but he caused enough havoc to level a small town before passing out. When he's in his more melancholy state, more interesting things happen. He normally just sits on the floor and stares at the ceiling. When someone comes in to check on him, he talks about his problems. Feelings of insecurity, guilt, and loneliness from various incidents throughout his life. The few things the Bulls know of Luck's home life are from the days when he's docile.
Luck gets the actual symptoms of his illness never. He feels cruddy but in terms of sneezing and headaches, he's all good. His mood is the only thing effected. Therefore, even when he's calm, he is still the most active. The only concerning physical symptom is his severe lack of appetite. He looses a strenuous amount of weight while sick as he refuses to eat. Luck is as unpredictable as always, just in a different way.
I have a request, and Grey is next!