Aquaman and the Lost Kingdom DC Multiverse Sunken Citadel Pirate Mega

One of many disreputable types who choose to  "disappear" from both surface and sea and reside within the underwater ghost town known as the "Sunken Citadel" a dangerous world made up of rusty, sunken vessels and Victorian era steampunk structures scavenged from around the world that cling to the steep, monolithic walls of an underwater canyon.