Undertale AU Wiki

Welcome to the Undertale AU Wiki, the main place for documenting Undertale's AUs. If you wish to contribute, just know that it is REQUIRED for you to read the Rules and Guidelines and the Policy of the Wiki BEFORE doing so.

As this is an AU Wiki, this wiki is NOT meant for characters. The Undertale OC Wiki exists for those. This Wiki is also not meant for AUs that do not have presence anywhere else, and those should be put on the Undertale AU Ideas Wiki.

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Undertale AU Wiki
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Undertale AU Wiki
Undertale AU Wiki
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Some or all of the canon Undertale characters swap roles and/or personalities with or shift into the roles of the other canon Undertale characters. e.g: Sans replaces Toriel.

If there is an in-universe reason for characters to change roles from their original ones, it doesn't fit in this type either. In that case, the AU is most likely in the Continuity Change and Special Event types.

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