Laboratory Leviathan began as Project Titanus, an attempt to engineer a supreme biological weapon by merging aquatic DNA with mutagenic agents. When the facility's containment systems failed during the cascade event, the creature absorbed toxic spills and energy surges, triggering rapid mutation and escape. Now fully awakened, it roams the course as a living relic of scientific hubris and environmental collapse.

Laboratory Leviathan has a massive hybrid form combining organic and synthetic elements, with glowing skin from radioactive decay and the ability to emit disorienting vibrations. Its multiple limbs provide agility across varied terrain, and it exhibits high resistance to physical damage due to reinforced cellular structures. However, electrical surges can destabilize its energy core, creating temporary weaknesses.

Laboratory Leviathan serves as a mobile environmental hazard that alters fairway conditions and player strategies through its movements. It triggers toxic eruptions and power disruptions, escalating the danger and narrative tension as the facility deteriorates.