Guessing who is the real skeppyspoopoo

You will all be disguised as skeppyspoopoo. I will have to guess who is the real skeppyspoopoo by eliminating yall through challenges ik he would win/lose. At top 3 I will guess who is the real one. If I guess incorrectly, the player who I guessed wins. There is a detector that turns green when skeppyspoopoo enters it.