She watches wrestling and is known as the toughest kid on the playground. She is stubborn, obstinate and frequently uses violence or threats when something is troubling her. She hates talking about her parents because they embarrass her all the time. Spinelli's parents are infamous for telling her friends about her feelings or showing them her childhood photos. She also is intending to keep up with the latest trend, as revealed in "Schoolworld" when she says she likes the SAL-3000 for being new, and in "Weekend at Muriel's" when Ms. Finster, having turned on the car radio on the way to the latter's house, says that "everyone likes the oldies", and Spinelli says, "Actually, I like the newies." She has a crush on T.J. Detweiler. She is the most aggressive and antagonistic kid in the gang. The other Recess gang members are not exempted from this kind of treatment from Spinelli.