Batman: The Animated Series

This movie came out the same year as Batman and Robin 1997 the movie was delayed after Batman and Robin gain poor reception.

Montoya is shown in uniform, but she was a plain clothes detective by the time of "Deep Freeze," which takes place before this.

In a shot establishing Alfred on the streets of London, a double-decker bus can be seen driving past in the background, on the right-hand side of the road. The passenger door can also be seen on the right-hand side of the vehicle. In the United Kingdom, automobiles travel on the left-hand side of the road, and (by necessity) have passenger doors on the left-hand side of the vehicle.

In this episode, unlike those previously featuring Scarface, the dummy's mouth moves like other characters' (becoming rounded when pronouncing words like "what"), as if he were flesh instead of wood.

When Catwoman faces Scarface in the sawmill, the Ventriloquist is seen using both his hands to make Scarface gesture with his arms, only this would leave him with no hand free to operate Scarface's mouth and eyes, which are moving nonetheless!

Duvall says he is a Heidelberg fencing champion. Heidelberg was a university in Germany where dueling meant you stood three feet from your opponent and then try to slash each other in the head. The entire point of this stupidity was to give each other big scars to wear as a sign of glory. Hence, Duvall's noticeable scar under his eye.

After Mr. Freeze uses his gun on Robin, Batman covers the ice encased boy with his cape. It doesn't seem to have any heat source of its own, which means that it will only act to preserve the temperature of the ice. The exact opposite of the desired effect.

Lock Up eventually became adapted into the official mainstream comics of DC even though he was originally created only for the show. He appeared in a Robin comic book series in 1996.

Catwoman tells the cops that Batgirl is innocent and they simply trust her on her word?

Lisa Lorain is clearly a parody of comedian and tv personality Roseanne.

Even though the brainwashed Lisa Lorain refers to herself as "Mighty Mom", the credits dub her "Rolling Pin", a classic weapon for an angry cartoon housewife.

This is the first episode featuring Harley Quinn that doesn't include The Joker in it

British actor Terry Thomas clearly serves as model as the British auctioneer.

When the Clock King is getting ready to "renew" his "acquaintance" with Mayor Hill, he is wearing regular glasses, but after picking up the newspaper he is wearing his clock pointers glasses.

When Baby Doll put the bomb in the cake, why didn't she or her goons make any effort to get away from it, given the size of the explosion it gave off?

This episode takes place after the last episode the Riddler appeared but it doesn't explain how he was released from his virtual from that episode.

When Batman turns the Riddler's riddle number upside down, he gets the address of where the crime is taking place, 10 LESLIE. However if you also convert the 10 into letters, you get IOLESLIE, or I OLES LIE. The Riddler may be telling Batman that even though people think he has reformed, "I always lie"

Batman did not suspect Poison Ivy to be one of Two Face's kidnappers. She should be suspected from which she wanted revenge on Harvey which happen in "Pretty Poison".

In the flashback from the episode Two-Face Batman shouts "Look out, Harvey," but in that episode he actually says "Look out, Dent".

Gotham City has a population of about 10 million people according to Mayor Hill, making it one of the biggest, if not the biggest city in the country (by comparison New York City, the largest city in the U.S.A., has about 8 million people).