[2] He has been a regular performer at the Upright Citizens Brigade Theater since 2005, where he was a member of the sketch comedy group Serious Lunch, who have been featured on Late Night with Jimmy Fallon and Attack of the Show.

[3] He later attended Hofstra University, where he graduated in 2004 as a Film Studies and Production major[4] and was a member of Sigma Pi fraternity.

[5] Milhiser made his debut on Saturday Night Live on the September 28, 2013, season premiere hosted by Tina Fey with musical guest Arcade Fire.

[6] His celebrity impressions included Jon Cryer, Matthew McConaughey, Verne Troyer (as Mini-Me from the Austin Powers movies), and Billie Joe Armstrong.

He has also made guest appearances on television programs such as Adam Ruins Everything, 2 Broke Girls, Netflix Original Series Love, and Other Space.