"Criminal Minds" Had A Ton Of Famous Guest Stars Through The Years — Here Are 28 You Might Have Forgotten About

I will absolutely never get over Matthew Gray Gubler and Aubrey Plaza's raging sexual tension.

🚨There are some major Criminal Minds spoilers ahead!🚨

1. Evan Peters

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Who he played: Charlie Hillridge, a teen who was abducted as a child and became his kidnappers' accomplice

Episode he appeared in: Season 5, Episode 16 "Mosley Lane" 

2. Mark Hamill

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Who he played: John Curtis, aka The Replicator, the serial killer who copied the crimes committed by other killers captured by the BAU

Episodes he appeared in: Season 8, Episode 23 "Brothers Hotchner" and Season 8, Episode 24 "The Replicator"

3. Luke Perry

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Who he played: Benjamin Cyrus, the charismatic leader of the Separatarian Sect

Episode he appeared in: Season 4, Episode 3 "Minimal Loss"

4. Elle Fanning

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Who she played: Tracy Belle, a young girl who survived two different serial killers

Episodes she appeared in: Season 2, Episode 6 "The Boogeyman" and Season 2 Episode 23 "No Way Out II: The Evilution of Frank" 

5. Rachael Leigh Cook

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Who she played: Maxine, Reid's girlfriend during the final season

Episodes she appeared in: Season 15, Episode 4 "Saturday" and Season 15, Episode 6 "Date Night"

6. James Van Der Beek

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Who he played: Tobias Hankel, the unsub who tried to rid the world of sinners and kidnapped Reid

Episodes he appeared in: Season 2, Episode 14 "The Big Game" and Season 2 Episode 15 "Revelations"

7. Aubrey Plaza

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Who she played: Cat Adams, aka The Black Widow Killer, the assassin who was simultaneously in love with and hated Reid

Episodes she appeared in: Season 11, Episode 11 "Entropy," Season 12, Episode 21 "Green Light," Season 12, Episode 22 "Red Light," Season 15, Episode 6 "Date Night"

8. Jason Alexander

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Who he played: Professor Paul Rothchild, the serial killer determined to get revenge on Rossi after he sent his brother to death row 

Episode he appeared in: Season 4, Episode 8 "Masterpiece" 

9. Mae Whitman

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Who she played: Julie, an abduction victim

Episode she appeared in: Season 5, Episode 5 "Cradle to Grave"

10. Amber Heard

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Who she played: Lila Archer, an actor and Reid's potential love interest

Episode she appeared in: Season 1, Episode 18 "Somebody's Watching"

11. Sheryl Lee Ralph

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Who she played: Hayden Montgomery, Rossi's second ex-wife

Episodes she appeared in: Season 11, Episode 20 "Inner Beauty" and Season 11, Episode 22 "The Storm"

12. Sterling K. Brown

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Who he played: Fitz, the head security officer for the US Embassy in Barbados

Episode he appeared in: Season 10, Episode 19 "Beyond Borders"

13. Tim Curry

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Who he played: Billy Flynn, aka "The Prince of Darkness," a prolific serial killer and rapist

Episodes he appeared in: Season 5, Episode 23 "Our Darkest Hour" and Season 6, Episode 1 "The Longest Night"

14. Forest Whitaker

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Who he played: Sam Cooper, the Unit Chief for the BAU's Red Cell team

Episode he appeared in: Season 5, Episode 18 "The Fight" 

15. Ben Savage

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Who he played: Jason Gideon, the younger version of the iconic role played by Mandy Patinkin

Episodes he appeared in: Season 10, Episode 13 "Nelson's Sparrow" and Season 15, Episode 9 "Face Off"

16. Danny Glover

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Who he played: Hank Morgan, the late father of Derek Morgan

Episode he appeared in: Season 11, Episode 16 "Derek" 

17. Frankie Muniz

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Who he played: Jonny McHale, a graphic novel creator and serial killer

Episode he appeared in: Season 3, Episode 10 "True Night" 

18. Cameron Monaghan

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Who he played: Jeffrey Charles, an underage serial killer who targeted other children

Episode he appeared in: Season 2, Episode 6 "The Boogeyman"

19. Aaron Paul

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Who he played: Michael Zizzo, a high school student and suspect for cult-related murders

Episode he appeared in: Season 1, Episode 10 "The Popular Kids" 

20. C. Thomas Howell

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Who he played: George Foyet, aka The Reaper, the serial killer who murdered Hotch's wife Haley

Episodes he appeared in: Season 4, Episode 18 "Omnivore," Season 4, Episode 25 "To Hell... And Back," Season 5, Episode 1 "Faceless, Nameless," Season 5, Episode 9 "100," Season 9, Episode 5 "Route 66," and Season 15, Episode 10 "And in the End"

21. Daryl Sabara

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Who he played: Kevin, a young boy involved in child pornography

Episode he appeared in: Season 2, Episode 2 "P911"

22. Jackson Rathbone

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Who he played: Adam Jackson, a serial killer and rapist

Episode he appeared in: Season 4, Episode 20 "Conflicted" 

23. Gavin Rossdale

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Who he played: Dante, a vampire-like rockstar and suspect of a murder investigation 

Episode he appeared in: Season 5, Episode 7 "The Performer"

24. Matthew Lillard

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Who he played: David Roy Turner, a rapist, serial killer, and partner of a two-person killing team

Episode he appeared in: Season 8, Episode 6 "The Apprenticeship" 

25. Finn Wittrock

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Who he played: Harvey Morell, a serial killer and former accomplice of an earlier unsub

Episode he appeared in: Season 7, Episode 11 "True Genius"

26. Bellamy Young

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Who she played: Beth Clemmons, Hotch's girlfriend

Episodes she appeared in: Season 7, Episode 10 "The Bittersweet Science," Season 7, Episode 14 "Closing Time," Season 7, Episode 16 "A Family Affair," Season 7, Episode 23 "Hit," Season 7, Episode 24 "Run," Season 8, Episode 3 "Through the Looking Glass," and Season 8, Episode 23 "Brothers Hotchner"

27. Michelle Trachtenberg

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Who she played: Diane Turner, the stalker who abducted and killed Reid's girlfriend Maeve

Episode she appeared in: Season 8, Episode 12 "Zugzwang" 

28. And finally, Tyler James Williams

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Who he played: Russ Montgomery, the technical analyst for the FBI's International Response Team

Episode he appeared in: Season 10, Episode 19 "Beyond Borders"

If you want a little refresher and to watch these episodes again, every season of Criminal Minds is currently streaming on Paramount+.