SUB-MARINER (1968) #10

Prince Namor has many obstacles in his way in an attempt to capture the Serpent Crown…one of them being the creature named Barracuda! Namor is first seen in an encounter with Karthon, during this encounter, the sub-mariner learns of the serpent crown, namor spares him temporarily. Karthon informs him that the crown belongs to his master Naga, it was stolen from him and he has lost all of his evil power, it is karthon’s quest to retrieve it. Karthon’s tale is interupted by the rebel Captain Barracuda. Both are swiftly captured, by a vessel commender-ed by Barracuda. Namor and Karthon are in chains while the Captain is waging war on the Air breathing world.…