'SNL' just added 3 new cast members - here's who they are

"Saturday Night Live" has officially announced three new cast members for the upcoming season.

They are Mikey Day, Alex Moffat, and Melissa Villaseñor.

They'll debut when the NBC sketch show returns on October 1.

The three new hires join "SNL" after it let go of six-year veterans Taran Killam and Jay Pharoah in August.

So who are these newcomers?

Here's a quick look at their careers before joining "SNL":