Susie Derkins

Susan "Susie" Derkins is a girl who lives in Calvin's neighborhood. She is his well-known neighbor and in the comic strips, some films, and some TV shows, she is the only major character to have both a given name and a family name. Susie takes her studies seriously and doesn't slack off on her homework like Calvin does. She also takes piano lessons. Susie believes it isn't a surprise no one has sold a house on their block for 6 years. She is often pelted by Calvin with various objects, including buckeyes, water balloons, and once a bowling ball-sized snowball.

Calvin once revealed that Susie eats each ingredient of her sandwich separately.

Her mother must be friends, or at least cordial, with Calvin's mother because she allowed Susie to stay with them when she could not pick her up. And she called Calvin's Mom when Calvin dropped a huge snowball on Susie as Stupendous Man.

Oddly, though she treats school seriously, she once attempted to cheat on a test question. She asked Calvin what the capital of Poland was until 1600. Calvin responded Krakow. Susie said thanks. But it was revealed Calvin said "Krakow!, Krakow! 2 direct hits!" as Spaceman Spiff. Ironically, that was the correct answer.

In the winter time, Susie also builds snowmen, although they are generic and not as unusual as Calvin's.

She is voiced by Dakota Fanning in all media.

Lunch
Susie reluctantly sits by Calvin during lunchtime at school, but Calvin always decides to sit next to her anyway. In many situations, Calvin would talk about his lunch, portraying it as something disgusting and unappetizing, such as naming his sandwiches revolting things. (An example would be when he told Susie that he mashed some flies into a paste onto 2 pieces of bread, and called it bug butter.) Susie often tells on Calvin for being so revolting by shouting "MISS WORMWOOD!!!". Also Susie once told Calvin that her favorite sandwich was Swiss cheese and ketchup. Or the time he asked her the difference between a slug and a two-inch-long living booger she shrieked and ran away.