To explain what's going on in the video basically this is part of the Pacinverse where Pac-Man is a emperor looking to take over the multiverse. I hope you watch more of DMG's content

Awesome reaction, Saph! 💙💛❤️

Knuckles The Echidna in Knuckles & Knuckles Knuckles (Knuckles Knuckles Knuckles) 0:03

5:15 At least you're in luck now that you have a Nintendo online expansion pack subscription. Sadly you can't play Sonic 3 & Knuckles there except on the Sonic Origins collection. Reason is because Sonic 3 and Knuckles had certain game music in stages related with the involvement of Michael Jackson due to copyright. It's not easy nowadays to release the original game other than in the Sonic Origins collection, which they altered few of the musics for specific stages there. You can still play Sonic 1 and 2 right now with the subscription you have if you want to give them a go