- The number 89 references the first Burtonverse movie being released in 1989.
- Outside of having a living Joker, it is unknown how much Earth-89 differs from the Burtonverse.
- Earth-89 was not shown post-Crisis.
- Characters from Arrowverse: Earth-89
- Other things related to Arrowverse: Earth-89
- Arrowverse: Earth-89's Comic Appearances
- Reality Gallery: Arrowverse: Earth-89
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