The ferocious Admiral of the Liopleurodon Space Fleet, Don Leo, attacked Teggs and his crew at the end of The Seas Of Doom. Leo has a huge appetite and a foul temper, and does not listen to reason easily. Don Leo crashed on Aqua Minor during a test flight accident, ending up marooned with his crew on the seabed. Don Leo bumped his head at some point during the crash or its aftermath, almost completely wiping his memory and turning him into "Mira". "Mira" left the ship when his hibernation system broke and he swam out of his ship in a daze, completely forgetting the way back. His cargo of whisperfish, a liopleurodon delicacy, escaped into Aqua Minor's seas, where they came into contact with Cripes and his cryptoclidus fishermen. He remained there in peace for six years.