Eddy Eater possesses a semi-fluid form that blends with water eddies, absorbing kinetic energy from movements to grow more aggressive. It is resistant to damage, reforming quickly if disrupted, and emits a disorienting low hum that vibrates through the fog.

It patrols key eddy points, consuming energy from player disturbances and triggering larger creature emergences, acting as an early warning system that forces careful navigation around water features.