James Gunn seems to be recruiting his usual suspects this weekend. The latest addition reportedly joining The Suicide Squad is Nathan Fillion.

Fillion (Firefly, The Rookie), has appeared in multiple Gunn films over the years including Slither and Super. Who – or what – Fillion will be playing in The Suicide Squad is under wraps for now. However, with his current series, The Rookie, returning to TV on Sept. 29, he can’t be available to film for long periods of time on a film. He could potentially be just a cameo, or he may be providing a voice for a character.