Nathan and Mimsy, recurring rivals of Jimmy, enter the South Park Elementary Special Ed Science Fair.
: The tardigrades are taken away, leaving the kids' projects in ruins, while Heidi's transformation into a "female Cartman" is fully realized.
Heidi’s character arc takes a dark turn as her relationship with Cartman continues to corrode her personality. [S21E8] Moss Piglets
" Moss Piglets " is the eighth episode of South Park's 21st season. It weaves together three distinct storylines involving a science fair, a toxic relationship, and political tension. 🔬 The Science Fair Scheme
: To keep her from leaving, Cartman manipulates Heidi into eating "Beyond KFC," which is actually just more fried chicken. She begins to physically resemble him. Nathan and Mimsy, recurring rivals of Jimmy, enter
: Government officials fear that the intelligent tardigrades could be used for advanced military research or surveillance.
President Garrison (the show’s surrogate for Donald Trump) becomes obsessed with the science fair. " Moss Piglets " is the eighth episode
: Nathan plans to win by using "Moss Piglets" (tardigrades) to create a superior life form. The Goal : He wants to impress girls and humiliate Jimmy.