Mark-Paul Gosselaar Moving Into Happy Endings for "Mysterious" Role

You've got to hand it to Mark-Paul Gosselaar — the guy gets around.

The Saved By the Bell alum, who will play himself on Tuesday's season premiere of Don't Trust the B---- in Apt 23 (9:30/8:30c on ABC), is now set to guest-star on the show's timeslot companion, Happy Endings.

Apartment 23 to host crossover episode with Happy Endings

Gosselaar, 38, will play the "new mysterious roommate" of Max (Adam Pally) in the 10th episode of the season, Entertainment Weekly reports.

Gosselaar currently stars on TNT's legal comedy Franklin & Bash, which was recently renewed for a third season. He will also appear on an upcoming episode of the TBS comedy Men at Work, created by his Franklin & Bash co-star Breckin Meyer.

Are you excited to see Gosselaar on Happy Endings? Why do you think his character is so "mysterious"? Sound off below!