Tyson Coy Stewart (born June 24, 1998), also known under the stage name Swim (formerly Koi) is an American actor, rapper, and singer.

He had a role in the TBS sitcom Are We There Yet?, as Flint in the ABC superhero drama series Agents of S.H.I.E.L.D., Marcus in the PBS Kids Go!

In 2019, Stewart founded the hip-hop collective Grouptherapy (now PartyOf2), alongside fellow child actors Jadagrace, Tyrel Jackson Williams, and Elijah Johnson.

[2] He then joined a talent agency in Columbia, DeAbreu Modeling and Consulting, before playing Travis Younger in a stage production of A Raisin in the Sun.

In August 2017, Coy Stewart played the primary role in the music video and short film of the song "1-800-273-8255" by rapper Logic which deals with the issues of homosexuality and suicide.