Question: who were all the celebrities on the masked singer?
Answer: The Rhino: Barry Zito. This content is imported from YouTube. ...  The Astronaut: Hunter Hayes. This content is imported from YouTube. ...  The White Tiger: Rob Gronkowski. ...  The Mouse: Dionne Warwick. ...  The Elephant: Tony Hawk. ...  Miss Monster: Chaka Khan. ...  The Robot: Lil Wayne. ...  The Fox: Wayne Brady.