Triachnid

Triachnid is a mechanical spider familiar exclusive to The Lab chapter, spawned by the Triachnid trinket at the start of each battle. It moves with high speed, prioritizing pickup collection on the battlefield before engaging enemies.

Triachnid's pickup-gathering behavior makes it more of a support familiar than a combat one. Rather than rushing enemies, it darts around collecting coins, hearts, and other drops, which then benefit your cats. Its mechanical spider form gives it a distinctive visual identity among Lab-area enemies and familiars.

If you're running the Triachnid trinket, plan your combat positioning around letting it sweep pickups early. Battles in The Lab often have valuable drops from robotic enemies, and having Triachnid vacuum them up automatically can save several turns of manual collection across a long run.