In Red & Blue rescue team, White Gummis can be found at Mt. Steel, Sinister Woods, Silent Chasm, Mt. Thunder, Mt. Thunder Peak, Stormy Sea. In Explorers of Time they can be found in most dungeons. In Explorers of Sky White Gummis can be found at Blizzard Island, Marine Resort.
White Gummis cannot be found in Explorers of Darkness.