These shows were part of the DC animated universe.

Green Kryptonite remains the only variety of the substance ever seen in the DC animated universe.

It's also heavily implied that the series takes place in the DC animated universe.

Kasnia or Kaznia is a fictional country which appears in the DC animated universe.

A trailer released in June 2007 showed a slightly altered animation style from that of the DC animated universe.

The actor/actress's voice role is reprised from the DC animated universe.

Burton has portrayed Brainiac in the DC animated universe.

It has been stated that this Red Hood is someone crucial to the DC animated universe.

All of which are a part of the DC animated universe.

The Batmobile made appearances in the various series of the DC animated universe.