He fixes Chocobo's wounded leg by mechanizing it, which allows Chocobo to travel on water now, calling the bird "Chocobot". He also tells Sumo that he's relying on him to save the world and tells him to go talk to Bogard before he leaves town.
When Sumo returns to Ish and meets Dr. Bowow, he mentions that Sumo will need the ultimate magic of Nuke which happens to be sealed by Lich, telling him to go north to the Palmy Desert and defeat Lich. Afterwards he tells Sumo to blow a crystal in the Crystal Desert to reveal the Cave of Ruins.
After Julius's defeat, Sumo visits Bogard, Sarah, and Dr. Bowow in Ish.
Dr. Bowow's Japanese name is a transliteration of bon voyage, a French phrase that usually translated as "have a nice trip" or "safe journey".
His English name, Bowow, is based on a common onomatopoeia for a dog's bark, "bow-wow".