Tart is kind of a crybaby and hates to be called chibi/chibiko (Japanese for runt, or midget) in Tokyo Mew Mew. He argues a lot with Ichigo and usually resorts to name calling. Overall, he is a rude and childish alien who likes to have fun, and make people cry. He is more prone to laughing out of true amusement (as opposed to Pie's solemn expression and Quiche's 'evil smirk'), and throws occasional tantrums when things don't go the way he expected them to. His energetic, childishly curious personality is comparable to that of Bu-Ling Huang.