Kendall is usually a bossy little girl, but is a very good and intellegent student. She has very rarely failed a class and is a straight A student who earns mostly the highest marks (A-, A, A+, and even A++). As class president, she holds a great deal of responsibility within the school. She is always annoyed by Kick Buttowski, to which she refers to him by his first name, Clarence. Because she likes elegance, she doesn't break any rules. To Kendall, elegance and rule-breaking are polar opposites of each other. When she gets really angry, she becomes a very scary girl (nearly a monster) who screams louder than anyone. She is simply bossy and a little mean; she is also not too friendly with people whom she considers idiots (like Gunther). Ronaldo at the time was her actual boyfriend, but it is hinted that she has a secret crush on Kick, which can be seen in many episodes, as in the entire series way before she met Ronaldo. When they're together, Kendall will always begin to warm up to Ronaldo. But once he does something stupid, she usually gets very angry at him and becomes a very scary person. She is also shown to be very knowledgeable about technology as she is able to activate Ronaldo's force field without his help.