In the 1960s television series, Season 2, Episode 39 is titled "The Penguin Declines." It originally aired on January 18, 1967, and serves as the conclusion to a multi-part story arc involving a criminal alliance between the Joker and the Penguin . Episode Synopsis
The Joker breaks the Penguin out of Gotham State Prison to help him complete his "Zodiac" themed crime spree. Their primary goal is to collect a $10 million ransom by threatening to turn Gotham City's water supply into jelly. Batman Season 2 - Episode 39
(in one of his earliest TV appearances) plays a delivery boy for the Penguin. Key Trivia In the 1960s television series, Season 2, Episode
This was a rare instance of villains successfully entering the Batcave , though they failed to learn its secret location. In the 1960s television series