The characters: Fleetway Sonic, Lord X and Fatal Error were singing the FNF song "Zanta" and they were trying to save Majin from Cyclops.ISO. When it got to the part where Fleetway had to shoot Cyclops.ISO, Cyclops.ISO's face shapeshifted into Majin's face.

Fleetway Sonic: "Oh no..which one do I shoot..?" points finger at Cyclops.ISO, (btw, Fleetway Sonic fires laser beams)

Fatal Error slaps his face and frowns at Fleetway Sonic

Lord X looks at Fleetway Sonic