Visitors

Visitors were aliens that came to Earth and gave Eric Cartman an Anal Probe in the pilot episode "Cartman Gets an Anal Probe". They also kidnapped Ike and then said that cows were the most intelligent species on earth.

Episodes

 * 101: Cartman Gets An Anal Probe
 * 314: The Red Badge of Gayness - Seen on their home planet.
 * 615: The Biggest Douche in the Universe - With the other aliens who came for John Edward.
 * 704: Cancelled

Hidden visitors
South Park animators have "hidden" visitors in many episodes, especially early in the series. They poke a little fun at this practice in Cancelled when the receptionist at the proctologist's office is a Visitor disguised only in a wig. Then, to the sound of percussive music, this Visitor dramatically removes his/her wig.

Pictures of Visitors

 * A picture of a visitor appears on the "Have you seen me?" poster in the cafeteria in the episodes:
 * The Mexican Staring Frog of Southern Sri Lanka
 * Chef Aid
 * The Succubus
 * Sexual Harassment Panda
 * The Tooth Fairy Tats 2000
 * Elementary School Musical
 * Chef Goes Nanners
 * Fat Camp
 * Proper Condom Use


 * A crayon drawing of a visitor appears on the "our pets" notice board in classroom scenes in the episodes:
 * World Wide Recorder Concert
 * Timmy 2000
 * Cherokee Hair Tampons
 * Chef Goes Nanners


 * In episode Pinewood Derby when the crowd awaits the aliens there are 3 signs showing pictures of visitors.

Real Visitors

 * This list is incomplete, you can help by expanding it.

Season One

 * 104: Big Gay Al's Big Gay Boat Ride - In the audience at the Football game.
 * 107: Pinkeye - Three visitors can be found in this episode
 * At the morgue a miniature visitor is seen in a jar.
 * Another visitor can be seen when Liane Cartman is decorating the house.
 * Back at the morgue, on a calendar.
 * 108: Damien - There are three aliens in this episode.
 * In the whirlwind that occurs as Satan speaks.
 * Cheering in the boxing match crowd
 * Behind the mayor in the boxing match.
 * 113: Cartman's Mom is a Dirty Slut - The visitor is behind Chief Running Water.

Season Two

 * 201: Not Without My Anus - Sitting on the stands with Cow hats and in Tehran.
 * 202: Cartman's Mom is Still a Dirty Slut - Standing among the crowd of Cartman's potential fathers in the hospital.
 * 203: Chickenlover - An alien is brushing a horse at the petting zoo.
 * 205: Conjoined Fetus Lady - A picture of an alien playing tennis is seen in a Dodgeball stadium.
 * 208: Summer Sucks - Standing in the pool where Cartman is getting his swimming lessons.
 * 209: Chef's Chocolate Salty Balls - In the audience of the independent movies: "Witness to Denial" and "A Bunch of Gay Cowboy's eating Pudding". And also among the crowd rushing out of the theatre after the movie "Me & Mr Hanky".
 * 211: Roger Ebert Should Lay Off the Fatty Foods - In the final scene when Cartman speaks about being on TV and a hero, a visitor's silhouette is on a computer console, with coloured lights making up the eyes.
 * 213: Cow Days - The limousine at the end of this episode is driven by a Visitor.
 * 215: Spookyfish - When Stan's dog is digging up the dead bodies you can see a (green) visitor behind a tree.
 * 216: Merry Christmas Charlie Manson! - While racing from the mall Manson's tattoo changes from a smiley face to a visitor.
 * 217: Gnomes - Appears in the final scene, standing in the back row of the group shot outside Harbucks Coffee House while everyone is laughing at Tweek.

Season Three

 * 302: Spontaneous Combustion - The outline of the face of a Visitor can be seen on the moon, when Cartman dreams that Chef rescues him from the cross.
 * 307: Cat Orgy – When Cartman is watching Aliens, there's a visitor behind Ripley.

Season Four

 * 408: Chef Goes Nanners - When Chef discovered Jimbo and Ned wearing KKK robes, for one second a Visitor is seen standing in the shadows next to a tree.
 * 409: Something You Can Do With Your Finger – On one fo the pillars that hold up the bridge above Stan’s parents bed, before they go to the mall.
 * 410: Do The Handicapped Go To Hell? - There are two visitor sightings in this episode.
 * After Cartman falls out of the confessional. Two visitors can be seen on top of the confessional.
 * When Cartman hoses Kyle, Ike and Timmy during baptism, a visitor can be seen behind a tree.
 * 411: Probably - On top of Cartman's Church.

Season Five

 * 502: It Hits the Fan – In Merlin’s lair, opposite the entrence.
 * 504: Super Best Friends - Two visitors appear in this episode:
 * Upside down in Jesus's reflection when he lines up with the others.
 * Part of one appears at the David Baine show in Denver in the overhead screen.
 * 507: Proper Condom Use - On a Pine tree behind the boys who are trying on condoms.
 * 508: Towelie - On one of the towel clones behind the blonde haired leader of the group trying to take Tynacorp down when he is telling the boys how they have been double crossed.

Season Six

 * 602: Jared Has Aides - Just after Jared's girlfriend Christine runs away from him in the restaurant, behind the upper-right table a visitor can be seen, he's the same color as the wall. Also when butters is trying to get fat, Chef is stirring the food in the bowl with a visitor, this one is wood colored, instead of gray.
 * 603: Asspen There are two visitors in this episode:
 * On the back of Kyle's chair, when Cartman joins Stan and Kyle for breakfast.
 * On skis behind Thumper, when he begins to teach the class.
 * 605: Fun With Veal - Next to Butters when Cartman starts the negotiation.
 * 606: Professor Chaos - In front of the "Yeti Log Ride".
 * 608: Red Hot Catholic Love - Atop the obelisk at "Vatican Square".
 * 615: The Biggest Douche in the Universe - In between Chef and Liane at John Edward's show.
 * 616: My Future Self n' Me - Under the window in Butters' living room.
 * 617: Red Sleigh Down - In the crowd in the second scene where the mayor announces the Christmas lights will be lit shortly. He is in the crowd cheering, slightly above Dr. Mophesto to the right of the screen.

Season Seven

 * 701: I'm a Little Bit Country - In the closing scenes of the episode, with the other guests.

Season Eight

 * 805: You Got F'd in the A - In the crowd after the O.C. crew is killed
 * 806: Goobacks - Atop a tall building in Little Future.

Season Nine

 * 914: Bloody Mary - On the right side of the screen, mixed with the car background, as Stan is talking with his father. This visitor is seen only in one part of the scene change, after Randy finds out that the Virgin Mary statue is bleeding.

Season Thirteen

 * 1308: Dead Celebrities - After they anounce the winner at the end. He is sitting with the audience.
 * 1309: Butters' Bottom Bitch - When it shows butters with his tie, and the other playground kids about to go behind the "building" to kiss the girl. He is REALLY small, in the very far background, behind the jungle gym.
 * 1310: W.T.F. About one minute into the episode, when the boys leave the WWE match, there is a visitor on the pay phone, he disappears after some of the crowd passes by.
 * 1311: Whale Whores - On the crab fishing boat when it first appears, among the crowd. Only eyes are visible.
 * 1313: Dances with Smurfs When Cartman is sitting down, in the background in the door.
 * 1314: Pee - Holding a banana at the end of the episode.

Characters

 * Carl is the only named visitor. He's one of the visitors that gave Eric Cartman an Anal Probe. He was new and was accidentally turning cows inside out.