Shawn Andersen is the secondary protagonist of the ninth Goosebumps Most Wanted book, Here Comes The Shaggedy.
History[]
Shawn Andersen was watching Swamp Beast III with his sister, Kelli. He was shaken, and his sister was trying to scare him to get his father to see that moving to Florida was bad. She wanted to stay with her friends, so scaring him was the best way apparently. Shawn himself didn't really want to go either, just because of Kelli scaring him, but he had to. He was in the kitchen with his dad, and he was scared of the monsters. He asked his dad if there were any swamp monsters. He told Shawn that if they did see any, that they would invite them for dinner.
When the story jumps ahead, Shawn is packing his backpack for school, then he is walking with Kelli. He asks Kelli why everyone is so worked up, because there was police and teachers meets Zeke and Decker along with Kelli meeting them, and the boys tell them about the Shaggedy. Shawn shivers.
At lunch, Shawn and Kelli talk about all the classes being in the same room.