Rikuo (Aulbath in Japan) is a character from Darkstalkers. He is a Brazilian merman. Deep beneath the Amazon, lay a kingdom of the 30,000 mermen. One fateful day, this peaceful aquatic empire was shattered and destroyed by a tremendous earthquake and volcanic activity. The merman emperor and hero Rikuo Aulbath, was alone. His empire destroyed, he was filled with rage and when he found out that Pyron was the one who caused the fall of his empire, he vowed to destroy him. But when he met another survivor, Keera Aqueria, he settled down with her to rebuild his empire. He and his wife moved out of the Amazon into the great ocean to raise their family. Currently, family consists of his wife Aqueria, his three sons and 12 soon to hatch eggs.