An intelligent Bubbles which switches between a cute bubbly voice and a snappy know-it-all bookworm's voice. An innocent good girl who is still capable of being an arrogant smartass and voice of reason. A laidback form of anger but with single blows so vicious you'd say she's a natural-born smooth criminal. Instead of politely critiquing you in a reserved manner like a parent scolding a child, she'd be insanely vicious when doing the scolding.
Then we have her good happy side of being a helpful innocent girl with booksmarts who helps everyone out and actually feels for the people she helps instead of feeling cold towards them and giving cold responsible advice and help.
Not to mention her love for animals. Usually bookworms aren't much for animals or low intellect people, but with her benevolence I could see her looking past that and helping both animals and people with excitement/vigor/energy uncharacteristic of the bookworm archetype easily bored and reserved about everything.
I think it's a great idea to toy around with. Combinations of pure stereotypes are worth writing about and putting into action.