Kat was heavily inspired by animator and cartoonist TheOdd1sOut when they joined YouTube, starting with a video called Short People Problems (animation). After that, they posted a second video about fandoms, and so on. Kat's channel soon reached 100,000 subscribers, and they published a video revealing their face and celebrating 100,000 subscribers.
In 2020, they came out as transgender and genderqueer.
Katzun's Kloset is a second channel Kat started (after a video on coming out), dedicated to publishing live-action videos about LGBTQ+ topics and stories. The most viewed video on the channel is a story about being gay in a religious school.