Multiple times later movies emulated the plots of some episodes, intentional or not.
Plot: "A shockwave creating monster attacks San Francisco, resulting in a large burrow in the ground and civilians packing onto the Golden Gate Bridge to flee in which they are menaced when a section of the bridge falls during Godzilla's approach. Godzilla then fights his smaller, shockwave using foe across the city resulting in a finale at San Francisco Bay". Episode 2 "The Eartheater" or Godzilla (2014)?
Plot: "An ancient but advanced civilization resurfaces from the sea floor. Our human protagonists are forced onto it as the laser spewing security system comes online. The city's kaiju sized creation goes berserk and menaces both its creators and modern humanity. With the help of the human protagonists and a projected image of the city's ancient leader, the heroic kaiju manages to destroy the creation and the city leaves". Episode 7 "The Colossus of Atlantis" or Rebirth Of Mothra 2?
Just Here for Godzilla: A textbook example. The main human cast is largely interchangeable with the typical Hanna-Barbera cast, and fans generally hate Godzooky, but the battles between Godzilla and the other monsters can still make up for it.
The Scrappy: Godzooky. He gets a lot of hate from the Kaiju community, though in his defense, he's just a baby monster and may mature into something bigger and more likable if the series ever gets rebooted. Plus he's not The Load and does help the Calico crew frequently.
They Wasted a Perfectly Good Plot: As unloved as he is, Godzooky actually could have been the basis for a promising storyline. He's canonically said to be Godzilla's nephew—and unless the Big G is merely his Honorary Uncle, this would presumably mean that Godzilla also has at least one sibling. But for some reason, this idea was never explored, and Godzooky's parentage is unknown.
Well, technically, the original Godzilla did die in the original movie. Maybe Zooky is his kid.