- “With the Cortex in hand, Project Medusa will be completed, and this world will be the first to witness its power!”
- ―Master Ronin
Project Medusa was a weapon developed by Master Ronin. It harnessed the power of the Cortex to generate an amplified psionic blast capable of targeting select species within its blast radius.
During his conflict with Amici, Master Ronin successfully used Project Medusa to wipe out 75% of humanity on Earth, though the weapon was utterly destroyed afterward due to Amici weakening the Cortex prior. The effects of the weapon was later undone by Mackenzie Davis through the use of Prima Materia.