“Suits LA” has added three new guest stars.

Variety has learned exclusively that Patton Oswalt, Brian Baumgartner, and Enrico Colantoni are all set to appear in the first season of the NBC legal drama. All three will play a version of themselves.

The trio join previously announced guest stars like Maggie Grace, Matt Letscher, Sofia Pernas, and Carson A. Egan. The main cast of “Suits LA” includes Stephen Amell, Lex Scott Davis, Josh McDermitt, and Bryan Greenberg. It was also reported that “Suits” star Gabriel Macht will appear in a multi-episode arc of “Suits LA” as well.

The roles mark returns to NBC for Oswalt, Baumgartner, and Colantoni, as all three have previously starred in NBC comedies — “AP Bio” for Oswalt, “The Office” for Baumgartner, and “Just Shoot Me” for Colantoni.

Oswalt is a highly-accomplished stand up comedian who won the Emmy for best writing for a variety special in...