His standout performance in Amazon Prime's "LOL: Ireland" in 2024 earned acclaim from host Graham Norton, who called it “The funniest thing I’ve seen in a long time.” He also starred in the Netflix film "Apocalypse Clown," which won Best Feature at the Galway Film Fleadh in 2023, and appeared in Amy Huberman’s "Finding Joy." 

He’s made a significant mark online, where his sketches have amassed millions of views. His 'Soft Drink' sketch was hailed by JOE.ie as “the funniest Irish sketch of all time.” In addition to his online success, his live shows are a hit, selling out venues in Ireland and the UK, including multiple nights at Dublin’s Vicar Street.  Hot Press magazine called him the 2nd best comedian in Ireland.

Aside from acting and comedy, Cantwell's voiceover work has connected him with several brands, including Dunnes Stores, AIG, Frank & Honest, Tayto, and a recent collaboration with Arnold Schwarzenegger for Lidl. He's also set to star in the upcoming RTÉ animated show "Doodle Girl."