Who's that Pokemon?

I believe the answer is Wobbuffet.

I'm big, I'm black, I'm disguised in plain sight, who am I?

 

Yea your'e right.

Garbardor?

Rubbing my fur together causes explosions, who am I?

 

Garboardar is green/brown, not black...
Typhlosion

 

Yea typhlosion.

I need a hint ;_;

 

Its not Garbardor, but it is Gen 5 and in B/W you need three legendaries pokemon to obtain it.

 

Its either Zorawar Zoroark

 

ding ding ding ding ding, give the man a cigar, cause thats correct!

 

But you aren't. You only need one of the shiny legendary beasts to get Zoroak, not all three.

I feed on dreams and really like children.

 

Darkrai

I am N's Partner when you choose Black, but should you choose White, I'll be yours instead.

 

No.

Zekrom.

New one: I am the terror of the seas, hunting those weak to me.

 

Gyarados?

Mix me with black, mix me with white. Mix me with both to see what I once was

 

Kyurem

I am shaped like something the sky with a jewel in my heart.

 

No.
I strike fear even out of water. There is no tactic but brute force against me.

Jirachi maybe?

 

Is it Sharpedo?

 

Tentacruel

I was restored from a fossil and made part machine.

I have many drives, come and catch me

 

Nope and nope.

Genesect.

Last clue for mine; I have a mouth full of teeth, and powerful bite, but if you underestimate my Special stats, you're in for a shock.

 

Feraligatr

 

Still no.
I'll let somebody else guess before I count this as my win.

 

I don't smoke. A simple pat on the back will do.

Makes me think like HoT: Feraligatr
Makes me think its.. Eelektross

 

Yes! I'm so glad you got it.

I am dark in colour, but not in type. My teeth are small, but strong, and if I bite you, you may just be paralyzed.