Kass is a Super Smash Bros. Ultimate player from Finland who mains Jigglypuff. He is considered to be the best Jigglypuff player in the region, and has achieved numerous high placements in Finnish tournaments during recent years. Such notable results include 4th at Arkade Nights #1 and 4th at Last Stock, Last Hit!. Kass has also attended tournaments outside of Finland, placing 65th at VCA 2021, where he nearly took a set off of Sisqui. He has set wins on Takahashi, Lyfja, Leggasiini and Lancelot. Online, he has a win on Noxumbra.