|Last appearance||Victorious Series Finale|
Cat Valentine is almost always cheerful, and is rarely in a bad mood. As an example, in Survival of the Hottest she states that, "I'm really hot, but I'm still in a good mood!", emphasizing the fact that she rarely gets angry. In Robbie's song, Robbie's Big Toe, and on a few other occasions throughout the series, she is said to be bipolar. It is possible that she is just very random, excitable, and maybe a little insecure, which sometimes comes in handy. She stated in a The Slap video that her mom was a competitive breath holder while she was pregnant with her, which baffled many doctors. This could be a possible reason as to why she is the way she is. Her family has visited Cat Valentine. Ariana Grande, the actress who portrays her, says she feels Cat is a challenging character to play because her ditziness might make it hard for her to be seen as likable by the fans and that she works to make them understand Cat's personality. Cat also loves animals such as rabbits, hedgehogs and any animal that is fluffy or adorable.