During his first season as a cast member, Day gained recognition for his wildly popular "Haunted Elevator (ft. David S. Pumpkins)" sketch with Tom Hanks as well as his Donald Trump Jr. impression.

Day was a member of the Groundlings comedy troupe in Los Angeles and a cast member on Nick Cannon's MTV comedy series "Wild 'n Out" for seven seasons. He was also a co-head writer and cast member on NBC's "Maya & Marty" and co-writer for the 2016 comedy "Brother Nature." Alongside "SNL" writer Streeter Seidell, Day wrote the Disney "Home Alone" reboot, and the duo is currently writing Disney's reboot of "Inspector Gadget." Most recently, Day can be seen in Amazon's "Brittany Runs a Marathon" and Universal's Will Packer-produced comedy "Little," opposite Issa Rae.

Day will appear in Netflix's upcoming Adam Sandler film "Hubie Halloween."

He is from Orange County, California, and his birthday is March 20.