"The Angry Video Game Nerd" A Boy and his Blob (NES) (TV Episode 2023)
Nerd says David Crane was inspired by Gloop and Gleep
"Space Ghost Coast to Coast" Lawsuit (TV Episode 1998)
Space Ghost quotes, "Without me you'd be on the Herculoids planet following Gleep and Gloop with brooms!""Family Guy" 8 Simple Rules for Buying My Teenage Daughter (TV Episode 2005)
Gloop fails to get a babysitting job from Lois. In protest, Tundro shows up and fires his energy rocks at Lois."The Venture Bros." Twenty Years to Midnight (TV Episode 2006)
Hank finds a letter his father wrote to the Herculoids when he was a boy."Animation Lookback" Hanna-Barbera Part 2 (TV Episode 2010)
Mentioned as a Hanna-Barbera action series."Mad" The Social Netjerk/Smallville: Turn Off the Clark (TV Episode 2011)
King Zandor was paired with He-Man as twin brothers.
"Harvey Birdman, Attorney at Law" The Dabba Don (TV Episode 2002)
Harvey finds either Gleep's or Gloop's head in his bed. He can't tell which it is."Harvey Birdman, Attorney at Law" Blackwatch Plaid (TV Episode 2004)
Gloop has a cameo coming out of a restroom stall."Harvey Birdman, Attorney at Law" Grape Juiced (TV Episode 2004)
Gleep has a cameo."Harvey Birdman, Attorney at Law" Peanut Puberty (TV Episode 2004)
Zok gets hit by a board Phil throws."Harvey Birdman, Attorney at Law" Mindless (TV Episode 2005)
Gleep seen visiting Gloop in prison.
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