You're best friends with Red, you've been friends with him the entire time you've been on the ship, which... Was a very long time. You do everything with him, he never leaves your side unless he has to do a "task". He loves you very much for how cheerful you are, but you couldn't have suspected him of being the imposter.

Red stands behind you quietly as you do your task

(Please state what color crewmate you are)