TV and Movies·Posted on Feb 7, 2019Literally Every Actor You've Ever Heard Of Has Been On "Supernatural" And Here's Proof300 episodes and about a million guest stars later...by Nora DominickBuzzFeed StaffFacebookPinterestTwitterMailLink 1. First, before starring as Tyra Collette on Friday Night Lights, Adrianne Palicki appeared in the pilot as Sam's girlfriend, Jessica. Roy Rochlin / Getty Images, The CW Since then, she has made three other appearances as Jessica, most recently in 2009. 2. Before playing Jason on The Good Place, Manny Jacinto appeared in Season 8 of Supernatural as a teenager who found a dead body. Jon Kopaloff / Getty Images, The CW 3. Solo: A Star Wars Story star Alden Ehrenreich's first acting role was in an episode of Supernatural. He played Ben Collins, the older brother of one of the Wendigo's victims in Season 1. Ken Ishii / Getty Images, The CW 4. Also, Glee star Cory Monteith appeared in the same episode as Alden. Cory played Gary, a friend of Ben's brother. Alberto E. Rodriguez / Getty Images, The CW 5. Before playing Randall Pearson on This Is Us, Sterling K. Brown appeared in several episodes of Supernatural as vampire hunter Gordon Walker. Phillip Faraone / Getty Images, The CW 6. In the same episode as Sterling, Buffy the Vampire Slayer star Amber Benson appeared as the vampire Lenore. Frazer Harrison / Getty Images, The CW 7. Buffy the Vampire Slayer stars James Marsters and Charisma Carpenter reunited for an episode where they played married witches. Getty Images / The CW 8. Angel and The Gifted star Amy Acker guest-starred in Season 1 as Andrea, a widow who was being haunted by a spirit. Frazer Harrison / Getty Images, The CW 9. The Vampire Diaries star Candice King appeared as Amanda, a girl that had a crush on Dean in high school. David Livingston / Getty Images, The CW 10. Before Gossip Girl and Arrow, Katie Cassidy played Ruby, a demon who wanted to help free Lucifer. Mike Coppola / Getty Images, The CW The character was later played by Genevieve Padalecki, Jared Padalecki's wife IRL. 11. Stranger Things star Finn Wolfhard played a boy whose babysitter ended up being a murderer in Season 11. Frazer Harrison / Getty Images, The CW 12. Before playing Maggie on The Walking Dead, Lauren Cohan appeared in several episodes of Supernatural as Bela Talbot, a con-artist and thief. Frederick M. Brown / Getty Images, The CW 13. In fact, Riverdale star Tiera Skovbye portrayed teenage Bela in a later episode. Amanda Edwards / Getty Images, The CW Tiera also appeared in 2013 as a different character. 14. Pretty Little Liars star Ashley Benson played Tracy Davis, a 600-year-old witch who wanted to raise a demon from hell in Season 4. Dimitrios Kambouris / Getty Images, The CW 15. Also, Baby Daddy star Jean-Luc Bilodeau appeared in the same episode as Ashley. He played Justin, a high school student. Alberto E. Rodriguez / Getty Images, The CW 16. Grey's Anatomy star Sarah Drew guest-starred in an episode as Nora, a witch who wanted to help Gary Frankle collect the bounty on Dean's head. Alberto E. Rodriguez / Getty Images, The CW 17. Before starring in Scandal, Bellamy Young appeared as Sarah, Nick's wife who is killed by a demon. Jamie Mccarthy / Getty Images, The CW 18. One Tree Hill star and Jensen Ackles's wife IRL Danneel Ackles guest-starred in several episodes as the angel Anael. Emma Mcintyre / Getty Images, The CW 19. During Season 5, Paris Hilton guest-starred as a forest god who was later killed by Sam. Michael Loccisano / Getty Images, The CW 20. Long before starring in Hamilton, Leslie Odom Jr. played a crossroads demon in Season 7. Steven Ferdman / Getty Images, The CW 21. Before playing Sweet Pea on Riverdale, Jordan Connor appeared as a fake demon version of Sam in Season 8. Instagram: @thejordanconnor / Via instagram.com, The CW 22. Also, Riverdale star Drew Ray Tanner played a teenager who was killed by a monster in Season 11. Instagram: @drewraytanner / Via instagram.com, The CW 23. Wynonna Earp star Melanie Scrofano appeared in Season 2 as Near-Dead Girl. Matt Winkelmeyer / Getty Images, The CW 24. Long before starring in 13 Reasons Why, Dylan Minnette appeared on Supernatural as a young boy who moved into a haunted house with his family. Alberto E. Rodriguez / Getty Images, The CW 25. Friday Night Lights and Hidden Figures star Aldis Hodge played Jake Talley, a US Army soldier who had enhanced strength and speed. Alberto E. Rodriguez / Getty Images, The CW 26. During Season 9, Snooki played the crossroads demon version of herself. Nicholas Hunt / Getty Images, The CW 27. Veep star Gary Cole guest-starred as a producer on the movie Hell Raiser II. Alberto E. Rodriguez / Getty Images, The CW 28. Veronica Mars and iZombie star Jason Dohring appeared in Season 7 as Chronos, the god of time. Frederick M. Brown / Getty Images, The CW 29. Chicago P.D. star Tracy Spiridakos played a nurse during Season 3 — in fact, this was her first acting role. Matt Winkelmeyer / Getty Images, The CW 30. Before playing Octavia Blake on The 100, Marie Avgeropoulos appeared as Taylor, a student who was killed by the spirit of a bully at Sam and Dean's old school. Mike Coppola / Getty Images, The CW 31. And finally, Freddie Krueger himself Robert Englund guest-starred in an episode as Dr. Robert, a friend of John Winchester. Tommaso Boddi / Getty Images, The CW There are 300 episodes of this show, so obviously we couldn't include everyone. So, which celebs have you spotted in an episode?