From the author's README on Thunderstore

Foxy the Pirate from Five Nights at Freddy's as a full-body costume for ReSkate.

Uses the original suit, endoskeleton, teeth, and eye textures from Shelter's Foxy Blender model. Color textures have not been repainted or recolored. Complete source images retain their original resolution; native array layers contain complete copies instead of cropped strips. Normal, roughness, and metallic channels are packed for the game. The game uses its own shaders and lighting; identical Blender rendering is not verified.

Installation

Install the ZIP through the ReSkate launcher under MODS, enable Classic Foxy, and restart the game. Select the Foxy full-body costume in character customization.

Credits

Original model: UFMP.
Model edits and textures: Shelter / maninshelter.
Five Nights at Freddy's character: Scott Cawthon.
Built with ReSkate Studio.

This is a community costume for ReSkate.

Install Classic Foxy

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

Open ReSkateLauncher.exe and go to MODS.
Search for Classic Foxy 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.