Zork (a.k.a. Harvey Zork) is a green alien who appears in a number of skits on Sesame Street animated by Mike Christy, aka ArtistMike.
- Harvey Zork Visits the Coast (EKA: Episode 2687)
- Zork lands on the coast of California, where he meets a slick agent.
- Skiing (EKA: Episode 2882)
- A St. Bernard helps Zork down a snowy hill, later finding out that Zork wanted to go skiing.
- Harvey Zork Visits Australia (EKA: Episode 3023)
- Zork lands in Australia.
- Ring Toss (EKA: Episode 3033)
- Zork wants to play ring toss with a group of campers, who refuse to let him join in the game until their instructor reminds them to not be judgmental.