you head over to reactor to finish your last task, but you see yellow just standing there

You: "Oh, hey Yellow-"

All of the sudden, Yellow suddenly turns into Red

You: "Uh...I mean...Hi Red-"

before you could finish, Red suddenly turns into Green

You: "Wha-...Green..?"

Soon, they change again. but this time turn into Black, one of your biggest enemies and the best murderer/impostor

You: "Okay. What the hell is going on!?"

and then...It changes again...but this time into...You..?

You: "Wait...that's...Me..?"

You..?: "You have survived SEVEN impostors. But now. I will be the last you encounter. Nothing and no one can save you now."

It then transforms into its normal self, revealing a man with a top hat, Plague mask, spear, and yellow glowing eyes