Gwyn is a girl who goes to the same school as Luc and Theo. She is, in her own words, the best student in the whole town. She has a crush on Luc, but unfortunately the one who's interested in her is Theo.
She is very skinny and she has short pink bob hair with bangs and wears large square-rimmed glasses, yellow hairclips, a light blue hoodie with a number 8 in the front, yellow shorts, white socks and brown sandals.
Gwyn is a nerdy girl, with not so many friends, but she's still cheery, and upbeat and goes through every Monday, and regular day, with a smile. She is able to have very strong feelings for others, such as a stalkerish crush on Luc. Also she dislikes Theo's harrasments.
- Theo Fly (Non-Speaking Cameo)
- She's All Bot
- All Things Being Sequel
- 4 Out of 5 Dentists Prefer the Loop (Cameo)
- Sickwich (Cameo)
- There's a New Principal in Town (Non-Speaking Cameo)
- Getted Smart (Non-Speaking Cameo)
- Fart Busters (Cameo)
- Applecrab-Dabra (Non-Speaking Cameo)
- The Replacement (Non-Speaking Cameo)
- Loop it Forward
- Chick Magnet
- Sooper Loopers (Non-Speaking)
- Port Fear
- Jan-Itor-Nado (Non-Speaking Cameo)
- Baby Daddy
- 11 Minutes to Lame
- Larping in the Loop (Mentioned)
- Ronnie Trasco
- Badmerton to the Bone (Non-Speaking Cameo)
- Loop - There it is
- Bald is Beautiful
- Out of Time
- Glitch Girl
- Her name is Kim in the German dub and Mylene in the French dub.
- Gwyn was inspired by Velma Dinkley from Scooby Doo.
- Gwyn's creepy stalkerish crush on Luc is very similar to Kitty's crush on Eric from Sidekick as well as Maurecia's crush on Todd from Wayside and her personality is also very similar to both Kitty Ko from Sidekick and Mina Beff from Grojband.
- Gwyn, Kitty, Maurecia and Mina also share the same voice actress: Denise Oliver.