An Earth frozen by the Time Trapper in the 19th century technologically and culturally. The world pushed forward despite these limitations - still inventing means of air travel, and even a telegraph Internet - and is protected by the frontier champions known as the Justice Riders.
- Justice Riders (Earth 18)
- Time Trapper (Earth 18)
- This world is a revised version of Earth-18, which was the home of a similar world of heroes who called themselves the Justice Riders.
- Earth 18 is opposite Earth 9 in the structure of the Multiverse.
- Characters from Earth 18
- Other things related to Earth 18
- Earth 18's Comic Appearances
- Reality Gallery: Earth 18