Pete Davidson is guesting on The Rookie as Nathan Fillion's half-brother

Entertainment Weekly

“We had him come down and do an episode of The Rookie, he plays my half-brother," Fillion says of the SNL star, in an interview with SiriusXM's EW Live. "My miscreant, ne’er do well half-brother. One’s a cop, one’s a pain in the a** — and now they’re half-brothers. It’s amazing." Fillion and Davidson met on the set of The Suicide Squad.