Naval Commander Bosgun is a character from the Kamen Rider Series, Kamen Rider Black RX.

Bosgun is a Crisisian, who wields a jagged electromagnetic sword and dagger. He is in charge of the Man-Beast/Mutant unit. He once plotted to take over General Jark but his plans were foiled when one of his swords was destroyed by General Jark himself upon discovering his treachery when he lost to RX twice. He died fighting when he was stabbed by the Revolvcane during the arrival of Granzyrus.