Lumin

The Lumin is a species of Pikmin that has bioluminescent skin.

=In fanon games=

In Pikmin: Dusk and Dawn
Lumin appear in Pikmin: Dusk and Dawn as the first Pikmin type to be encountered. They are first found in the Verdant Vales by Captain Olimar. They are not able to be found during the day, only the night. Lumin are light blue, have even lighter blue-ish spots covering their body, beady glowing white eyes, and a glowcap replacing the leaf of their stem. They are resistant to darkness and have the unique ability to root themselves into the ground, their stems growing into miniature Common Glowcaps, providing precious light that can repel creatures that lurk in the dark.

They are later found again in the Luminescent Caverns, along with their Onion. Their Onion was swallowed by a Glowstool, which also when exposed to their spores for an extended duration of time, turns regular Pikmin into Lumin. However, this does not happen in-game, only in lore.