Toby Fox's Deltarune continues to roll out at a glacial pace, but the video game's slow release has only served to encourage the fandom's wild theories about its lore.

Fans have now realized that the game recycles much of the Undertale cast, though their personalities and histories often arrive in rearranged pieces.

The character Asgore Dreemurr, once the final boss and child-murdering monarch in Undertale, is now a divorced flower shop owner and former police chief.

In 2021, fans began floating a theory that Asgore may have killed Noelle Holiday's missing sister, Dess, a character never seen on screen but frequently mentioned.

Here's how the fringe fan theory gave rise to one of the biggest meme trends to emerge from Deltarune.

Where Did The 'Asgore Running Over Dess' Theory Originate?

The theory that Asgore may have had a hand in Dess's death first began to appear online in 2021, with Redditor u/degraffa being one of the first to float the theory in September of that year, writing, "I think Deltarune’s Asgore may have killed Noelle's sister Dess."

Fans quickly tied Asgore’s unexplained fall from police chief to florist to a possible vehicular manslaughter incident. The theory deepened with speculation that Dess might be the Roaring Knight, an unknown but powerful figure in Deltarune's lore.

If Dess became the Roaring Knight, and Asgore discovered this, it's not impossible that something drastic occurred.

The first comedic take on the theory came from Tumblr user @dessbian in July 2022, who posted an image of Dess in the Peter Griffin Death Pose, and wrote, " "sorry I cannot take the 'asgore hit dess with his car' theory seriously because I just picture this."

Despite the Tumblr user's reservations, the theory still persisted, and in October 2024, Redditor u/theory_crafter858 posted a video showing Asgore deliberately running over Dess, netting over 2,000 upvotes on the /r/Deltarune subreddit.

How Dess "disappeared" byu/theory_crafter858 inDeltarune

What's The Asgore Running Over Dess GIF?

The most well-known depiction of the theory arrived on June 11th, 2025, when X user @Triki_Tr0y posted a GIF that opens on Asgore smirking in his living room before cutting to a nighttime scene of him driving directly into Dess.

The GIF borrows directly from a scene in the 2006 animated film Open Season, in which Shaw the hunter claims, "It ain't my fault, he ran right in front of my truck," before a flashback reveals that he deliberately swerved into Elliot the deer. Triki_Tr0y’s post racked up over 70,000 likes in 10 days, taking the fan theory from fringe speculation to head-canon in-joke.

How Did 'Deltarune' Fans Build On The 'Asgore Running Over Dess' Memes?

The GIF from X user @Triki_Tr0y's success triggered a wave of follow-ups and reinterpretations in mid-June 2025, including a June 16th post from X user @fanteLiscio, who shared a redraw of the Flight Driving a Shoe meme, captioned, "how asgore was moving on dess on that faithful night 🔥." It garnered over 40,000 likes in roughly a week.

That same day, X user @ElTronnyXD contributed a version of the Chad Driver meme to the trend, swapping in Asgore's face and earning 39,000 likes in a week.

By this point, the meme had evolved beyond its original form, and internet users began remixing the GIF with alternate perspectives.

For example, on June 19th, 2025, X user @DarkWorldRaltzy posted a flipped version in response to the post, "This is what December was listening to when she ran over asgore," suggesting Dess herself got revenge behind the wheel.

What Are Some More 'Asgore Running Over Dess' Memes?

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For the full history of Asgore Running Over Dess, be sure to check out Know Your Meme's encyclopedia entry for more information.