Tengen is an eccentric and flashy individual, always wanting to be "flamboyant", possessing a need for everything to be flashy and outstanding, even proclaiming that he is the god of flashiness and festivals. This is shown when he gets excited imagining how "flamboyant" it would be if Tanjiro Kamado's blood vessels exploded, and tries to forcefully haul Aoi Kanzakioff to the Entertainment District with him so she can unwillingly help him with a dangerous mission, even spanking her.[7] As a result of his exuberant and flamboyant personality, Tengen is very demanding of others, treating the Demon Slayers very harshly during Hashira Training and insulting them for having no substance when they couldn't survive his stamina training.[8] Furthermore, he also abhors the idea of unflashy things, as shown when the Hashira openly expresses his hate for plainness.