Robin

Rushes to bathroom (alien steps into his body) (Screams ahhhhhh) it's ok babe just having a crap (poo drops in the loo too make it sound convincing) (transform ) downloading his memory he will become Robin so don't suspect anything he will hide his demon and alien form he will keep Their features talk like Robin and eyes will remain the same too (grunts drops another poo make your boyfriend believe it) Ahhh need that babe don't come in yet just washing my hands coming out.