Gorilla (Go! Greenman!)

Gorilla (who is often known as King Kong in the series) is an antagonist of Greenman, in an episode of Go! Greenman titled, Greenman vs Gorilla. The suit used is the suit from King Kong escapes, due to this being filmed shortly after.

Legal Issues
Because Toho no longer owned the rights to use King Kong they had to change the name to gorilla.