Only One Name: In one episode, though, she presents herself as "Samantha Simpson". Okay, they were undercover, but they always use their own names for these situations, so why not?
Arch-Enemy: Geraldine, and arguably Mandy. Sometimes she has a friendly rivalry with Sam.
Allergic To Routine: Clover usualy gets bored easily. Perhaps this may explain why she has an obsession with boys...
Ambition Is Evil: Clover usually tries to get famous. In fact, such a behavior is strongly explicit during the episode "Model Citizens" in which Clover and Mandy compete in a beauty contest. There are many other examples though.
Berserk Button: Don't dare to say that Clover uses clothes bought in a liquidation. It never ends well... She doesn't like being turned down by a guy as well.
Furry Fandom: Clover turning into a furry cat? The walking, talking, human animals in the episode Animal World?
Go Karting with Bowser: This happens many times with Clover. For example, during the episodes "Sis-Ka BOOM-Bah!" and "Evil Sorority" when she "fights" alongside with Mandy like... uh... best friends?
Jack-of-All-Stats: Clovers suits well here. She is strong, but not the strongest. She is smart, but not the smartest. In fact, even Jerry had problems to justify her presence in the team (during the episode "Like, So Totally Not Spies").
Lovable Sex Maniac: She is not an extreme example like a certain character from a recent anime by Gainax (Anarchy Panty), but she seems to have a natural tendency for love.
Drives Like Crazy: Though she isn't too bad, she had a lot of trouble passing her driver's exam and is generally considered the worst driver of the three. Ironically however, she is often the one to drive.