Katrin Marwen

Katrin Marwen is Lise's twin sister who first appeared in "Lise's Dad Buys a New Car".

Personality
Katrin is a bratty, immature, stubborn and luxury-obsessed girl. She can also be quite bossy, as stated by Lise in "Lise's Dad Buys a New Car". She can also be annoying to her twin sister at time. However, she makes up for it with her creativity and love for agriculture. She loves planting indoor crops.

Katrin is shown to like texting people. She is quite attached to her phone. She is also prone to tantrums, and one time when her father and sister disagreed with her idea of a road trip, she threw a massive tantrum.

Appearance
Katrin is a teenage girl with fair skin, brown hair and blue eyes. She wears a blue shirt, light blue pants and burgundy shoes. She also has her nails painted azure.

Lise
Katrin and Lise are twin sisters. They have a sibling rivalry, yet they can get along well. While Lise is the more responsible sister, Katrin tends to be the more foolish sibling.

Trivia

 * Katrin's immaturity, bratty and stubborn personality, love of agriculture and tantrums are a reference to a joke related to Wallonia, Belgium's French-speaking region, or the "French-speaking twin".
 * Katrin may have ADHD.