Dr. Marina Vortex was conducting hydrodynamic research upstream when her experimental water displacement devices accidentally breached the ancient spawning chambers beneath the creek bed. Now trapped in a perpetual eddy of her own creation, she continues her experiments even as the creatures she awakened circle her makeshift laboratory. Her scientific obsession has transformed her into both the cause of and solution to the escalating aquatic horror.

The Eddy Scientist appears as a waterlogged figure in a tattered lab coat, constantly spinning in the circular current of a supernatural eddy that follows her wherever she goes. Her diving goggles are perpetually fogged with creek water, and her modified underwater research equipment sparks and bubbles as it functions in the aquatic environment. Strange bioluminescent samples in waterproof containers orbit around her like a twisted solar system, evidence of her ongoing attempts to catalog and control the creatures she unleashed.

She serves as the ongoing destabilizing force who refuses to cease her research despite the catastrophic consequences, actively making the situation worse by continuing to probe the creatures' domain. Her presence indicates areas where new experimental breaches might occur, serving as a mobile hazard that can appear at any water feature on the course.