Cathy Katherine

Cathy, nicknamed Cat-chan, is a character appearing in Yu-Gi-Oh! ZEXAL who has an obsession with cats to the extent that she behaves like them and can control them.

Design
Cathy, like her nickname implies, has the appearance of a cat. She has two pieces of hair held up by clips which give her the appearance of having cat ears. She also wears the same outfit that Kotori Mizuki wears as they attend the same junior high school. She also wears a pair of large, square-framed glasses.

Personality
Cathy is a loner and a stereotypical shy girl, especially towards her crush; Yuma Tsukumo. As stated above, Cathy has a bizarre obsession with cats and seems to have an affinity for controlling them. Her obsession goes to the point that she decorates almost the entire interior of her house with cat-themed paraphernalia. She has a habit of dressing up in cute cat-themed clothes in the Gothic Lolita style and sometimes exhibits cat-like behavior; i.e. curling her hands to simulate cat paws, finishing her sentences with the word ニャーnya and licking her lips.

Manga
Cathy has a crush on Yuma and argues with Kotori over him. She is part of Yuma's circle of friends, with Kotori, Tetsuo and Todoroki.

Anime
Cathy appears to be stalking Yuma, appearing in the background of several scenes, hiding. She also appears alongside other students after Yuma attempts to swim the length of the pool in gym class. She and Kotori are the only students not laughing.

She then later appeared when she sneaked into Yuma's bedroom and swapped his clothing with something that would anger Kotori, which worked excellently as she wanted Kotori and Yuma to fall out. Then when Kotori offered to take Yuma shopping for more clothes, Cathy set a trap for Kotori not to turn up in order to anger Yuma, by doing this she was able to take one of Kotori's ribbons to attract Yuma to save her.

She then dueled Yuma, gaining an advantage with her swarming abilities with her Cat deck, but she lost.

She then approached Yuma the next day at school, and said hello before running off while blushing.

Deck
Cathy's Deck is a Cat deck.