: Heidi adopts Cartman’s victim mentality and aggressive rhetoric. By the end of the episode, she has become just as manipulative and mean-spirited as Eric himself. The Presidential Interference

Heidi’s character arc takes a dark turn as her relationship with Cartman continues to corrode her personality.

: 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.

President Garrison (the show’s surrogate for Donald Trump) becomes obsessed with the science fair.