Roommates with Bowser & King K. Rool

Bowser's personality varies depending on his role in the plot. In the main platformers, where he is the main antagonist, he has a very dark, brutal, merciless, destructive, cataclysmic, and serious disposition. For years, it was also rumored by fans that while most other Koopas prefer vegetation in their diet, Bowser's sharp teeth, another common feature of his, were an indicator of him preferring meat, preferably from victims he hunts down and captures. Indeed, Bowser is shown quite often to be an expert hunter.

K. Rool personality is as his name (a pun on "cruel") may imply, K. Rool is often bossing his minions through threats and intimidation, often punishing them severely when they fail. K. Rool's personality could be best described as: extremely manipulative, highly insensitive, very hateful, sadistic, baleful, cunning, wrathful, power-hungry, tyrannical, brutal, greedy, truculent, pompous and failure intolerant. Even his most powerful followers seem to fear his wrath.