From the author's README on Thunderstore

Gwen — Total Drama Island

Bring Gwen’s goth style to San Van with this full-body character cosmetic for ReSkate.

Features Gwen’s recognizable teal-and-black hair and outfit. Custom character model fitted to the game’s skeleton. How to use

Install and enable the mod in ReSkate Launcher, then equip Gwen under Apparel → Costumes.

Notes

Some clipping or deformation may occur during extreme poses. Feedback and screenshots of any issues are welcome!

Credits Character: Gwen from Total Drama Island. AI-assisted model and texture generation using ComfyUI. Mesh Compiler by Fourth Studio. Built using ReSkate Studio.

Unofficial fan-made cosmetic.

Install Gwen TDI

You need ReSkate and your own copy of skate. on Steam.

Open ReSkateLauncher.exe and go to MODS.
Search for Gwen TDI and click install. The launcher also installs anything it depends on.
Press PLAY. In game, the MODS tab of the ReSkate menu (Insert) turns it on and off.

Or install it by hand: download the .zip and drop it on the launcher window, or unzip it into its own folder in Mods\ beside Skate.exe.

Maps show up in the ReSkate menu's level list. To join a server running a custom map, you need the same map installed. If the game won't load after installing, see known issues.

skatemods doesn't host or review this mod. The download comes straight from Thunderstore. Only install mods you trust, because scripts can run code.