I like to think Villain!Kai has a comically unhinged temperament — he’s always laughing and smiling, like at the very beginning of the series/manga, wrecking Beyblades like a total maniac, and again in the final arc of season one.
He’d probably laugh at the dumbest things as long as they involved someone else’s suffering or loss. And then Kai comes back to his senses, drops one of those dry, bitter comments, and Tyson just looks at him and goes:
“You know what? You were a complete jerk back then, but at least you had a sense of humor.”
The thing is, Kai’s humor was never meant to be liked, it flirts way too closely with uncomfortable truths.













