Lanaluna (ラーナルーナ ) is a boss enemy from Ys VI: The Ark of Napishtim, fought during Adol's rescue mission on The Romun Fleet. It is a giant toad Admiral Agares kept as a pet.
While searching the ships of the Romun fleet for the kidnapped Rehdans, Adol finds Olha in a cage in the storage area of one of the ships. Before he can free her, a gate is opened and Lanaluna enters the area. Adol defeats Lanaluna and frees Olha. Before they can leave, Admiral Agares appears with two Romun soldiers. When he notices the defeated Lanaluna in the corner of the room, he is distraught over what happened to his treasured pet and orders his soldiers to kill Adol. Both the soldiers and Agares are then dispatched by Geis, who was looking for information on his brother.