The one that only Fred Flintstone could see? Drawing a very irritating blank.
Great Gazoo
Gazoo… IRC.
Voiced by the immortal Harvey Korman.
Not to be confused with Ozmodiar, whom only Homer Simpson could see and hear.
Umm, Barney could see him as well.
that The Great Gazoo and Q from ST:TNG have the same basic personality & powers?
Oh, sure–Gazoo was sweetened up for the kiddies, but both are basically the same.
Gazoo is part of the Q Continumn! 
Next Week–I prove that George Jetson & Riker were separated at birth.
Gazoo Barada Nikto