Purple Guy (also known as William Afton) murdered Luigi and took his place in the competition!
The sprites are made by witheredBBfilms: https://www.reddit.com/r/fivenightsatfreddys/comments/gxbead/william_also_goes_karting/
Database match: Mario Kart - Super Circuit (USA)
Database: No-Intro: Game Boy Advance (v. 20210227-023848)
File/ROM SHA-1: 9D327C030C3E2D9007990518594F70C3340AC56F
File/ROM CRC32: ED316E37