Greek was, and still is, a fan fave...
So it's no surprise that everyone wanted to appear in a few episodes back when it was still on the air. Some of these actors were just beginning their careers at the time that they showed up on Greek as a frat brother, or college student, or love interest. In case you missed them, here are some of the biggest stars who had a role on the show over the years! And you can watch all four seasons of Greek right here on Freeform.
1. Harry Shum Jr.
That's right, everyone's favorite Brooklyn Warlock was once a member of the fraternity system at CRU! He only played a small role but we are LOVING the blue highlights. Check him out in Season 1 Episode 19 of Greek and watch all of his best moments on Shadowhunters by clicking here!
2. Dave Franco
He's as famous as his brother now, but before he was making a name for himself in the movie industry he was an adorable pledge at Kappa Tau Gamma! Check out some of Gonzo's best moments in Season 1 and 2 of Greek by clicking here!
3. Olivia Munn
Fans of The Newsroom and X-Men: Apocalypse (2016) will recognize this beautiful woman as the incredible actress who is taking the world by storm. But before she hit the big time we knew her as the charming bartender who stole Cappie's heart. You can have a look at the lovely Olivia by watching Season 3 Episode 5!
4. Max Greenfield
If you're a fan of New Girl or have seen The Big Short (2015) then you will definitely recognize this handsome man! He only appeared in one episode of Greek but one was enough for us to fall in love with him. Check out Season 1 Episode 18 to experience his moment of fame before he was famous.
5. Drew Van Acker
Before he was Alison's brother he was a member of one of the fraternities on Greek. He only had a brief role on the show but that's only because he was destined to play Jason on Pretty Little Liars. Have a look at a young Drew in Season 3 Episode 4!
6. Lauren Conrad
Now she's a television personality, fashion designer, and author, but back when she was the star of The Hills she made a guest appearance as herself in Season 2 Episode 10 of Greek. Watch the episode to see her give Casey some great life advice!
7. Jesse McCartney
This singer-songwriter was everyone's teen crush when he came on the scene in the 2000s, which made him the perfect guy to play Rusty's "little brother" He starred in several episodes so check out the show by clicking here! And, of course, we can't forget when he graced our screens on Young and Hungry.
8. Danny Pudi
Fans of Community and Star Trek Beyond (2016) will recognize the man in this picture. Before he hit the big time he was a fraternity-hating college student on Greek! Watch him in this dramatic episode from Season 1.
9. AnnaLynne McCord
Recognize this attractive blond? Before she was ruling school in 90210 she was a leather-clad biker chick making heads turn in Greek! If you want to go for a stroll down memory lane then check out her big moment in Season 1 Episode 6!
10. Ken Marino
This guy has appeared in so many shows that we've lost count! But we're proud to say he was a camp counselor on Greek before he made it into a bunch of Hollywood movies. Check him out in Season 2 Episode 11!
11. Candice King
She's everyone's favorite lady in The Vampire Diaries, but we loved her before it was cool! That's right, this angel played a secret society member in Season 2 Episode 20. You need to watch it right now!
12. Yani Gellman
Recognize this handsome face? If you haven't seen the Lizzie McGuire Movie (2003) then you must remember him as another member of the Pretty Little Liars cast! Before he played Officer Garrett Reynolds he appeared on Greek as one of Ashleigh's boyfriends. Check him out in Season 3 Episode 15.
13. Jessica Lowndes
Another 90210 alumna appeared on the show before we knew her. Not only did she appear on Greek she also had a guest appearance on Young and Hungry. Check her out in Season 1 Episode 11 right now.
14. Charisma Carpenter
She made a name for herself on shows like Buffy The Vampire Slayer and Angel so we were SUPER excited to see her appear on Greek! She played a representative from Nationals investigating the Zeta Beta Zeta's after a scandal. She pops up in several episodes so you can check out all the seasons by clicking here!
Did we miss anyone? Tell us your favorite Greek guest stars in the comments.
And you can watch all four seasons of the show right here on Freeform!