Undertale's Most Disturbing AU | AlphaTale

AlphaTale: Story, Controversies, and Legacy

The video traces AlphaTale, an Undertale AU created by Shadikal15, from its sprawling alternate-history plot to the controversies that came to define its reputation. What begins as a story about monsters and humans expands into a maze of timelines, cosmic realms, gods, and characters powerful enough to make the AU’s escalating power scale a running feature.

The Story: From a Monster War to a Multiverse

AlphaTale’s backstory centers on Wendy Ding Gaster, a monster raised by humans. After her adopted family is killed during the war between humans and monsters, Wendy pursues experiments using human determination. Her research creates powerful fighters and grotesque amalgamates, helping monsters win the war.

Wendy then poisons Asgore, takes control, and rules as the Astral Mother, imposing an authoritarian regime and continuing her experiments.

Her children, William and Adam, are caught in a cycle of violence and timeline resets involving Frisk, Chara, and Wendy. William eventually discovers Wendy’s secret laboratory; after repeated manipulation and tragedy, he turns against her. But a bargain leaves Jacob in Wendy’s hands. Jacob’s failed resurrection turns him into the vengeful Infected, and his confrontation with William in the anti-void leads to William becoming Error 404.

From there, the story swells into multiversal conflict. Error 404, Infected, King Multiverse, Alpha, and numerous other characters become entangled with the Mainframe, the Transvoid, the Eden Sphere, and the godlike figure 10. The video emphasizes that the lore becomes so sprawling—and so often retconned or replaced—that even deciding what counts as current canon can be difficult.

Designs, Power Scaling, and Creator Disputes

The video examines accusations that some AlphaTale characters closely resemble characters from other Undertale AUs. Examples include Error 404’s resemblance to Error Sans, Supreme’s links to EpicTale, and characters whose designs appear to borrow recognizable elements from Ink Sans, Nightmare Sans, Underfell Sans, and others. The narrator presents these as criticisms made by people in the community, rather than proof of the creator’s intentions.

Power scaling is another major theme. Characters acquire ever more abilities and feats, with Error 404 portrayed as surviving or shrugging off events that should be catastrophic. The video also highlights claims that AlphaTale characters were sometimes presented as superior to characters from other creators’ AUs.

In an especially self-referential plot point, an AlphaTale story depicts a Toby Fox avatar being defeated and imagines Undertale itself as derived from an in-universe prototype. The video makes clear that this is fiction within AlphaTale, not evidence about the real creation of Undertale.

The More Serious Controversies

The final section focuses on disturbing material involving underage characters and allegations about how Shadikal handled it. A former writer, Mystic, is identified as a source for several claims, which the video repeatedly distinguishes from independently verified facts.

Among the examples discussed are controversial relationships and sexualized depictions involving characters portrayed as children. The comic adaptation of Steelheart became a dispute after its anonymous artist reportedly refused to illustrate scenes they found troubling. The artist and Shadikal gave competing accounts of the disagreement, including a dispute over payment and the comic’s cancellation.

The most prominent controversy concerns LittleTale No More, a story the video attributes to Shadikal, not to the AlphaTale writing team collectively. Critics objected to its sexual violence involving characters presented as children and to comments reportedly made in response to criticism, including:

“I wrote grape, not CP.”

Shadikal later apologized, but some critics questioned the sincerity of that apology based on subsequent exchanges and posts.

The video also discusses an allegation of inappropriate interactions with a 14-year-old and claims that minors were present in a Discord server intended for adults despite the creator allegedly knowing about it. These are presented as allegations, with the video cautioning that the available material does not independently establish every claim.

Overall

AlphaTale’s vast lore and extreme power scaling are only part of the story. The video argues that accusations of copied designs, creator disputes, troubling material, and the community’s reactions became inseparable from the project’s legacy.

People and Notable Characters Featured

• Real-world figures: Shadikal15, Mystic, Toby Fox (as a fictionalized avatar in the story), and an unnamed comic artist.
• Prominent AlphaTale characters: Wendy Ding Gaster / Astral Mother, William / Error 404, Frisk, Chara, Adam, Jacob / Infected, Quenia, 10, and King Multiverse.