Some female characters wear somewhat revealing clothing.

Some innuendos.

Lots of fights, gunfire, etc. The overall violence is more intense than it is in most kids' shows. the violence is much more intense and plentiful than the original show due to airing on a different network that had less strict censors

No swearing in the original English other than the occasional "Oh my God".

The Penguin smokes a cigar.

People at a party can be seen drinking champange.

Lots of intense fight scenes.

Some of the villains have frightening appearances.

The whole show has a very dark tone, being even darker than 'Batman: The Animated Series', although the series does have its comedic elements.