Blue Bulbmin

Hidden deep within Pikmin: Sinister Incinerator is one, completely optional Pikmin variety called the Blue Bulbmin. These ultra-rare creatures are led by Blue Bulbmin leaders, similar to regular Bulbmin. If you're able to track down the location of this rare creature and can defeat it in battle (it's actually a tough enemy) and you have enough room for the five blue bulbmin it had following it, you can whistle them to your side. Resistant to all elements and cool-looking as well, Blue Bulbmin can leave the dungeon with you. There are four separate Blue Bulbmin leaders scattered in deep dungeons throughout the world, giving you a maximum of twenty Blue Bulbmin that you can hold in your ship at a time.

Portal- Kombat

Pikmin: Revenge of the Darkfreeze
Blue Bulbmin appear sometimes underground in place of regular Bulbmin, wherever Bulbmin are found. They appear about 25% of the time, in place of regular Bulbmin.

Appearance
In Pikmin: Revenge of the Darkfreeze, the Blue Bulbmin is simply a blue recolor of the regular Bulbmin, with an orange stem and a yellow flower.

Special abilities
Like other Bulbmin types, Blue Bulbmin cannot be taken above ground with you. However, they are immune to all hazards, makeing them a useful multitasking ally. As an added bonus, Blue Bulbmin are also slightly faster when submerged.