AFFILIATIONS: Unknown; Operates primarily in South America
BIOGRAPHY: Subject has been identified as a clone of Big Boss, thus the 'Fourth Son of Big Boss'. Created from genetic samples retrieved from various battlefields of both Solid and Liquid Snake, unknown groups created this clone for unknown purposes. Unconfirmed intelligence reports which have recently surfaced indicate that the group and purpose behind this clone's creation were destroyed in the early 90's. Further intelligence reports Plasma Snake operates as a mercenary in he Southern American continent. Attempts to bring him in for study half so far failed. As another clone, he is not expected to last long.