Blue Bulbmin

Hidden deep within Pikmin: Sinister Incinerator is one completely optional Pikmin variety known as Blue Bulbmin. These ultra-rare creatures are led by Blue Bulbmin leaders, similar to regular Bulbmin. If a squad of Blue Bulbmin is able to be tracked down and defeated, five juvenile Blue Bulbmin are able to be collected, if there is enough space in the party. Be warned, however, that adult Blue Bulbmin are formidable foes. Resistant to all elements, Blue Bulbmin can leave the dungeon as well. There are four separate Blue Bulbmin leaders scattered in deep dungeons throughout the world, giving a maximum of twenty Blue Bulbmin that can be held in the ship at a time.

In Pikmin: Revenge of the Darkfreeze
In Pikmin: Revenge of the Darkfreeze, Blue Bulbmin' appear sometimes underground in place of regular Bulbmin, wherever Bulbmin are found. They appear about twenty-five percent of the time in place of regular Bulbmin. Blue Bulbmin are simply a blue recolor of regular Bulbmin, with an orange stem and a yellow flower. Like other Bulbmin types, Blue Bulbmin cannot be taken aboveground. However, they are immune to all elemental hazards, making them a useful multitasking ally. As an added bonus, Blue Bulbmin are also slightly faster when submerged in liquid.