Mermaimon is an Aquatic Beast Man Digimon whose name and design are derived from the mythological mermaid as well as the pirate. She lures the enemy with her beautiful voice and good looks before going on the offensive.
Digimon Xros Wars
Mermaimon is the first mate of Olegmon's Gold-Thieves crew. She is battled and destroyed by JetMervamon during the Xros Heart United Army's rescue assault on Olegmon's ship, causing Olegmon to go into a berserk rage. During the final battle with DarknessBagramon, she is revived by the Code Crown, and digixroses with Shoutmon as part of Shoutmon X7 Superior Mode.