Whiscash Elder inhabits Whiscash Pond in Pokémon Square, revered as a wise and respected figure. He acts as a key source of information and guidance for rescue teams, most notably recounting the legend of Ninetales to the player and partner early in their adventure. His extensive knowledge encompasses natural phenomena like earthquakes, reflecting his species' lore about predicting seismic events.

When distressed Pokémon seek help, such as Pichu searching for a missing Pikachu, Whiscash Elder offers reassurance and organizes rescue efforts. He initially proposes Team A.C.T. for assistance but, discovering they are unavailable, directs the mission to other teams like Team Go-Getters and Team Meanies, showcasing his role in coordinating community responses to crises.

His duties include distributing vital exploration tools; following the main story, he provides the HM Dive, granting access to new areas such as Stormy Sea. He also unlocks Solar Cave, a location where additional HMs can be obtained to support further rescue operations.

A later appearance in Pokémon Super Mystery Dungeon suggests continuity, with a character likely being the same Whiscash associated with veteran rescue team members at Baram Town on the Air Continent.