In human form she is a very beautiful teenage female. She appears to be 16 and has a short blonde bob. She has a light blue shirt that somewhat hangs from her shoulders, pink pants and blue slip on shoes.
Before she changes into a monster her eyes glow, her voice changes, and she grows. In monster form she seems to be able to change into different forms. As one monster she looks like a green monster and her clothes are ragged, but she has also been seen as a fiery monster. However, after she explodes, she is fine and her clothes are unaffected while the rest of her family and nearby surrounding is completely ruined.
Katie doesn't seem to be aware of her exploding and turning into a monster after she has blown up, but she might just not come on it.
Monster Forms in "Animaniacs"Edit
- Katie Ka-Boo: In her first appearance, she brought her boyfriend C.B (who was really Chicken Boo) to meet her parents and her parents kept calling him a Giant Chicken, she then turned into a giant monster version of herself with wild purple hair, green skin and shredded clothes.
- In "The Driving Lesson" she freaks out into monster form when her dad was teaching her how to drive when she thinks she knows how to drive.
- In "Call Waiting" Katies dad forgets to take a message from her friends, so she freaks out.
- "Belly Button Blues"
On and Against Sora's TeamEdit
When Katie first laid her eyes on Riku, she wanted to join to get close to him, but soon when he was seen with Xion, she engaged combat by turning into a monster and fought against Sora, Riku, Xion, and Stitch. The showdown lasted about 78 seconds. After the fight, Katie was accepted in the team when Sora stepped in when he healed Katie from her injuries, and later lost interest in Riku and gained interest in Sora, but she also promises to try to control her monster forms.