Wobbly Wiggler is an animation tool for generating secondary motion and jiggle physics on armatures. Unlike physics systems that rely on Blender's built-in rigid body engine, this tool uses a custom Python-based solver that allows jiggle effects to be layered on top of actively animated bones rather than being restricted to passive, hanging elements.

Users can interact with the physics simulation directly in the viewport without playing the animation timeline, making it easier to adjust mass, stiffness, and damping parameters. The tool includes features for mixing keyframed animation with physics, simulating stick physics for connected bone chains, and applying roll and translation jiggle. It also supports bone-to-bone and bone-to-mesh collisions, and includes a baking operator with a cyclic action feature for creating looping animations.