Batman (1966–1968)
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The Penguin Declines 

As the Joker and the Penguin's zodiac theme become even more grandiose, the Dynamic Duo's dissolution becomes its ultimate goal.



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Episode cast overview:
Commissioner Gordon
Chief O'Hara
Mrs. Cooper
Joe Di Reda ...
Mars (as Joe DiReda)
Delivery Boy


Batman, summoning all the strength he can muster, breaks his chains and frees Robin from the giant clam. The heroes arrange for the Joker's former confederate, Venus, to stay at an apartment while they figure out what to do next. Meanwhile, the Joker has freed the Penguin from Gotham State Prison to continue their crime wave. The Joker tricks Venus into asking Batman to take her to the Batcave. The Dynamic Duo take her to their base of operations (but only after making her fall asleep first). When they arrive, the Joker, Penguin and assorted thugs are revealed to be hiding in the Batmobile's trunk. Batman, however, anticipated this and none of the criminals know where the Batcave is. A figure erupts, with Batman and Robin finally ending the zodiac crimes. Written by Bill Koenig

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Release Date:

18 January 1967 (USA)  »

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Technical Specs


Sound Mix:

(RCA Sound Recording)


Aspect Ratio:

1.33 : 1
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Did You Know?


The Joker's henchman all have the names of planets in our solar system, but Pluto, which was still considered a full planet when the series first aired, goes unrepresented. Perhaps the writers and producers foresaw its demotion to dwarf planet status... See more »


The Penguin: Women of America, beware! Don Juan Penguin is on the lose!
See more »


Edited from Batman: The Movie (1966) See more »

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User Reviews

Up pops The Penguin again, for The Joker's disastrous end
7 May 2016 | by See all my reviews

"The Penguin Declines" again brings back Burgess Meredith's feathered fink, missing from the previous chapter, for the final wrap up of The Joker's Zodiac crimes. Watching Robin get swallowed whole by Joker's giant clam inspires Batman to break free of his chains and pry open the huge maw (rather than clamp down, he'd prefer to clam up), although some in the audience might have wondered if the Boy Wonder's bromides would have given it indigestion! Joker's henchmen break Penguin out of prison, intending to transform Gotham City's water supply into jelly to accommodate Aquarius the Water Bearer, the ransom $10 million. As for Capricorn the Goat, Batman serves as the goat, the bait being Venus (Terry Moore), to be wooed by the more than willing Penguin. Rob Reiner, son of comic actor Carl Reiner and future co-star on ALL IN THE FAMILY, made only his fifth television appearance as Penguin's personal Delivery Boy, popping in and out as Venus is fooled into believing that he's turned over a new leaf but wants to destroy his file in the Batcave. The final showdown does indeed take place inside the Batcave, with both The Joker and Penguin foiled for the umpteenth time. All in all one of the second season's brightest, the verbal sparring between old pros Cesar Romero and Burgess Meredith making one wish that they had been teamed a second time since the feature film. Penguin would return next week for another three part episode, opposite the less memorable Carolyn Jones as Marsha, Queen of Diamonds, while Joker would be back for a pair of two part episodes before the start of the third season. One final trivia note: this was only the second glimpse of the Batcopter (in brief stock footage from the feature film), not seen since it was introduced in the movie some six months earlier.

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