Named after the painting Catherine of Alexandria by Raphael
She has shoulder length, curly brown hair that, like Magdalene, she wears down her back/shell
She has a yellow mask
She has aqua blue eyes
She fights with twin nunchuks that look almost like Mikey's, with extending chains and when squeezed at the part that connects the chain to the handle a curved blade pops out of one end. She holds them in the front, and, just like the other turtles, she has throwing stars, knives and smoke bombs.
She has freckles like Mikey, but hers are darker and she has more. Also, like Mikey, she is a genius in Dimension X, is a culinary expert, always has every pizza shop on speed dial, and is often used as bait
She is closest to Magdalene
Her favorite show is also "Crognard the Barbarian"
She is the youngest of the sisters
She is the shortest of the sisters and of the team
Outside of Dimension X, she is smarter than she looks, and she knows it, but her sisters don't realize it all the time, which is why they sometimes don't take her all that seriously, and that's why Mikey and her are great partners in crime
Her and Mikey have a great relationship, sometimes romantic, but most of the time they are like best friends.