Don't Worry, Your BAU Faves Are Back For the Final Season of Criminal Minds

Mantegna returns as Rossi, the role he's played since 2007's third season. His character is set to face down one of his greatest nemeses yet, while trying to keep holding the team together.

Prentiss first arrives in season two as a hostile presence in the BAU team, but quickly shifts loyalties to her new teammates. She's presumed dead in season six, but survives and returns to work again, on and off, with her longtime colleagues.

Vangsness's Penelope started out as a recurring character in season one before being promoted to series regular the following year, and she's been there ever since. The quirky, geeky hacker has been the show's comic relief (and its moral compass) for a long time.

Tyler joined the cast fairly recently, starting with a recurring gig in season 11 before joining full-time in season 12. Her arc has been a pretty emotional one, as she's had to apply her highly-specialized knowledge of forensic psychology to analyze the motivations and consciences of some truly brutal criminals.

Rodriguez has been with the show since season 12, when he began playing FBI Agent Alvez. Alvez comes into the BAU fold when he works with the team on a serial killer who attacked his old partner, eventually joining the team full time.