Scuba Soldier (official name unknown) is a minor stage enemy exclusive of the NES version Strider.
A group of soldiers wearing special scuba gear, found in the underground canals within the Pyramid Base and the Africa cavern. These soldiers wear an armored suit which allows them to remain underwater, and wield spearguns as their only weapon.
These soldiers remain submerged and await for Hiryu, springing into attack when he approaches their position. Once out, they stand in place while periodically shooting harpoons at him.