40 of the biggest guest stars on The X-Files, from Peter Boyle to Ryan Reynolds

You won’t believe the breadth of talent that starred on The X-Files over the initial 9-season run.

The original run of The X-Files included 217 episodes over nine seasons, meaning there were a lot of opportunities for guest stars. Creator Chris Carter did not let those opportunities pass, often nabbing already big names for an extraterrestrial experience or turn with a creepy monster-of-the-week.

Filmed in Vancouver, British Columbia, there were also a lot of yet-discovered and soon-to-be huge stars, including a teenage Ryan Reynolds and a very young Lucy Liu.

MORE: An ode to The X-Files, 30 years after the show premiered

Let’s get into some of the biggest cameos and guest-starring roles, but please note this is by no means all-inclusive.