Sub-Mariner (Sub-Mariner #62)

"A Realm Besieged!" - Namorita finds Namor and frees him from Dr. Hydro's prison. Meanwhile, Dr. Hydro and his amphibians have attacked Atlantis. With Namor gone, Tamara leads Atlantis into battle.

Also... "Tales of Atlantis!" - Almost 20,000 years prior to Namor's reign, Atlantis still existed above the surface and Emperor Kamuu leads the city's defense against the raiding Lemurians.