Martin Andrijasevic (known online as ThatMartinKid) is a Canadian YouTuber, content creator, and co-founder of the comedy and gaming duo Slushy Noobz. He was born in Edmonton (AB), Canada on March 25, 1999. He is of Croatian heritage. Before becoming one half of Slushy Noobz, he made comedy sketches on TikTok under the name ThatMartinKid. He studied mathematics and computer science at Carleton University. After working as a programmer, he moved to Toronto to pursue content creation full-time alongside Hamzah Al-Emad. They also co-host the podcast Out of Character together. In 2026, the duo embarked on a livestreamed road trip across Canada. Martin also makes hyperpop/alternative hip-hop music under the name 2006WR.