See How the 'Criminal Minds' Cast Has Changed Since Their First Seasons (PHOTOS)

Meredith Jacobs

The BAU looks quite different after 14 seasons of Criminal Minds — and not just because agents have come and gone over the years.

Only three of the team's members from Season 1 are still around: Matthew Gray Gubler's Dr. Spencer Reid, A.J. Cook's Jennifer "JJ" Jareau, and Kirsten Vangsness's Penelope Garcia. Paget Brewster joined as Emily Prentiss in the second season, and Joe Mantegna's David Rossi became part of the team a year later.

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The rest of the agents — Dr. Tara Reid (Aisha Tyler), Luke Alvez (Adam Rodriguez), and Matt Simmons (Daniel Henney) — joined in the past few years.

Ahead of the CBS drama's final season, we're taking a look at how the stars have changed from their first seasons to the most recent. Click through the gallery above to see who looks the most different.

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Criminal Minds, 15th and Final Season, Coming Soon, CBS