Water Hose

Water Hose (ウォーターホース) were pro heroes and Kota Izumi's parents.

History
When Kota was three, both of his parents were defending a village from Muscular and sacrificed themselves to save the civilians. The duo managed to injure Muscular enough to drive him away, including deeply scarring Muscular's left eye, and thus saved the civilians.

Trivia

 * Their databook entry spells out their name as "Water Horse".