Undyne
fictional character in Undertale and Deltarune
Undyne is a fictional character in the 2015 video game Undertale and episodic video game Deltarune. In Undertale, she is a monster who serves as the captain of the Royal Guard of the Underground under its king, Asgore. She is initially an antagonist to the player character, but depending on the player's actions over the course of the game, she may become their ally, their rival or their nemesis. If the player makes a point of killing every monster possible, Undyne will transform into Undyne the Undying upon death, vowing to destroy the player in order to save all other life from their actions. She is a lesbian, revealed to be in love with Alphys.
Undyne appears in the subsequent game Deltarune as the town's chief of police in the light world, a role unrelated to the one she has in Undertale, since she has no memory of or connection to any Undertale characters and does not wear an eyepatch.
Since her appearance in Undertale, she has been met with positive reception. Undyne's sexuality, as well as her relationship with Alphys, were praised by critics for how they were depicted. She was considered one of the best characters in and out of Undertale, particularly as a female character. Her boss fights were also praised, with Game Informer citing the "genocide" route boss fight against her as one of the game's best.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 18, 2026. The linked authority identifier is Q116251786. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2015.
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This entry incorporates text from “Undyne” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.