no
Unknown, maybe working with seven different types of Pikmin at the same time would make the main story too complex.
Bulbmin are Bulborbs that have been infected by a parasitic species of Pikmin. They are resistant to fire, water, electricity, and poison. They can be found in the Frontier Cavern, Submerged Castle, and Hole of Heroes, but there is absolutely no way for them to exit these caves.
Yes. Even though you cannot bring them outside of the cave with you their death still counts towards your final score.
Louis would come in similar to Olimar does, possibly with a different ship. He will either have the same pikmin that Olimar does, have bulbmin, or have pikmin and bulbmin. His final smash would be exactly like Olimar's. Basically, he would be an Olimar that is faster and can jump better. Louis will not be in Smash Brothers Brawl, however. That is my opinion, however.
You have to leave Pikmin idle by a Puffstool and call them at the exact moment they are hit by the Puffstool's spores. This requires perfect timing. Be careful, as Mushroom Pikmin will attack any other kinds of Pikmin.
Although it's an unconfirmed pikmin, it will most likely to be nature
Pikmin 3 is only made for Wii U.
Nintendo released Pikmin 3 in Japan on July 13, 2013.
This question has several answers. It depends how you look at it. There are at least 5: Red, immune to fire, and have slightly better attack than average Yellow, Can be thrown high, carry bomb-rocks, (Pikmin 1) and are immune to elecrticity (Pikmin 2) Blue, Immune to water. Yeah, that's it. White, (Pikmin 2 only) Immune to Poison, and deals damage to enemies when eaten. Can also see underground to dig up extra treasure. Faster than average. Purple, (Pikmin 2 only) Slow, but has high attack power and can stun enemies. Is as strong as 10 Pikmin! Then there are some others: Mushroomin,(Pikmin 1 only) Evil Pikmin infested by a Puffstool Bulbmin (Pikmin 2 only) Underground only, and immune to Fire, Water, Electricity, and Poison!
Pikmin 3 has not been released yet, and thus there is no way to tell.
No. The only Bulborbs in Pikmin 3 are the Red and Orange varieties.
Pikmin 3 for the Wii U has already been released.