The quote comes from Crooks in Moominvalley, an episode of the 1990 Moomin anime series in its English dub, where Snufkin is voiced by John Chancer. In context the line is played as dry, out-of-character villainy from the normally peaceful wanderer, which helped it stand out to English-speaking fans revisiting the dub years later. Clipped and shared as a short audio meme, it spread through Moomin fan edits and ironic shitpost videos, where its cozy origin makes the criminal declaration even funnier.
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Snufkin saying 'fill Moominvalley with crime' from the 1990 English Moomin dub's Crooks episode. Used ironically over petty mischief and chaos edits.
This is the deadpan voice line where Snufkin declares his plan to fill Moominvalley with crime, lifted from the English dub of the 1990s Moomin series. Delivered in John Chancer's calm, almost cheerful tone, it sounds more like a whimsical announcement than a real threat, which is exactly why it lands so well. The contrast between the cozy, gentle world of the Moomins and this sudden villainous ambition makes listeners do a double take, turning an innocent children's show moment into a perfect punchline for mischievous and rebellious humor.