VelociJACKtor dives whiskers-first into Japanese mythology with Ōnamazu, a wonderfully weird LEGO sculpture of the giant catfish said to thrash beneath the earth and cause earthquakes. Built for Round One of the 2026 Bio Cup, themed Magic and Mysticism, this is exactly the kind of creature feature I love: part folklore lesson, part parts-bin wizardry, and entirely unsettling in the best way.

The shaping here is the big catch. Catfish are deceptively tricky subjects, all smooth bulk, wide mouths, and those unmistakable barbels. VelociJACKtor nails the silhouette with a body that feels heavy and aquatic without turning into a plain brick blob. The head has that great flattened, ancient-monster look, while the fins and whiskers give the whole build motion, like this thing has just stirred from the mud and is deciding whether your tectonic plates need rearranging.
I’m especially fond of how sculptural the model feels. Bio Cup builds often reward clever organic construction, and this one has that satisfying mix of armor-like plating and flowing creature anatomy. The parts aren’t just stacked into a fish shape; they’re angled, layered, and tucked to create texture. It reads as mythic rather than merely biological, which is the sweet spot for a yokai-inspired monster.
The photography helps sell the legend, too. A dark, dramatic presentation lets the creature loom, turning a freshwater fish into something closer to a supernatural disaster with fins. It’s moody, mysterious, and just a little bit “please do not poke the earthquake catfish.”
Build by VelociJACKtor on Flickr.


