Hizzonner the Penguin (1) - S2-E17
Other mistake: When Pengy shows up at the Grand Order of Occidental Nighthawks he feigns shock, then as he shoves his umbrella into the vat of sulfuric acid, Penguin moves his arm/hand toward the right to pull out a different umbrella, one that appears destroyed by the acid. (00:22:55)
Hizzonner the Penguin (1) - S2-E17
Visible crew/equipment: At the start, when Penguin rescues a blind vendor in view of a GCPD officer, Penguin claims that the accusation he would molest a minion of the law is inconceivable, then as he pushes the vendor toward the officer, two chalk T-marks are visible on the ground. (00:00:50)
Hizzonner the Penguin (1) - S2-E17
Visible crew/equipment: After Batman and Robin are captured at GOON HQ, when it cuts to the bound Caped Crusaders hovering over a vat of sulphuric acid, in the overhead shot some chalk actors marks are visible on the floor beside the vat, at the bottom of the screen. (00:22:00)
Hizzonner the Penguin (1) - S2-E17
Continuity mistake: The indicator arrow alternates between AGONY and KO too quickly.
Hizzonner the Penguin (1) - S2-E17
Continuity mistake: The man with the tambourine goes from standing still just shaking the tambourine to moving wildly between shots.
Hizzonner the Penguin (1) - S2-E17
Continuity mistake: At the end of the episode, the pointer on the scales alternates from pointing between "AGONY" and "K.O." to pointing between "CLOSE" and "AGONY" and back again. (00:22:05)
Answer: There wasn't one singular city used. It was shot in and around various locations in California, plus on a lot of sets and backlots. Ex. Some scenes were shot in LA, some in Pasadena, some in Santa Barbara, etc.
TedStixon