In the episode, "The Death Camp of Tolerance", Mr. Garrison inserts Lemmiwinks into Mr. Slave's ass with the hope that he'll get fired. Lemmiwinks then travels through Mr. Slave's digestive system to reach freedom. With the help of the spirits of other animal victims, he escapes successfully, and is informed after his departure that he is actually the 'Gerbil King', and is thus destined for many more adventures.
In the later episode "Stupid Spoiled Whore Video Playset", Paris Hilton is inserted into Mr. Slave's ass, and then asked to take the same journey as Lemmiwinks (with the same song played, except that the name Lemmiwinks is replaced with Paris Hilton). The episode "AWESOM-O" was advertised as the return of Lemmiwinks, but he wasn't featured.
Lemmiwinks makes his genuine re-appearance in "Bass to Mouth" as a child's pet. It is revealed that he is the younger brother of a computer hacker rat named Wikileaks, who was posting humiliating and degrading stories of all the students in South Park Elementary. The ghostly animals from Mr. Slave's digestive system appear to Lemmiwinks to stop Wikileaks and needed the students to get him out. Lemmiwinks finally stops his older brother from posting a story that would destroy the reputation of South Park Elementary forever by killing him. However, when the Frog King, Sparrow Prince, and Catatafish asked how he feels, Lemmiwinks simply scurried away, feeling devastated for killing his brother.
Lemmiwinks is a gerbil with gray and tan fur. He has a long tail. He can sometimes be seen wearing a metal helmet with a torch on top.
- "The Death Camp of Tolerance" - Debut appearance as the class gerbil.
- "Bass to Mouth" - Most recent appearance as Vernon Trumski's pet gerbil.
Lemmiwinks appears in the game as a minor character. He is found in the fifth grade classroom of South Park Elementary and friends the player when he talks to it.