Alpha is the result of a bet between Matoran scientists to see if they could outdo Mata Nui himself. The result was a completely machine-and-energy based being, who the Matoran then ran several tests upon. Alpha did not like the painful experiments, so he infected the room with his bio-energy and 'deleted' his creators. He then modified a robot body for himself, and began wandering the galaxy for a purpose to life.
Alpha's most specialized tool is the tech pick, which can be plugged into any mechanical or bio-mechanical device, where it transfers some of Alpha's energy into the target, taking over it's internal systems and having it become an extension of his will.
In combat, Alpha uses a sword and plasma Zamor sphere launcher to fend off his opponents.
Alpha's essence is stored in a battery placed upon his right shoulder. It is made out of a specialized crystal, and was made to be virtually indestructible. It contains most of Alpha's being.
(Thanks guys! please rate and comment!)
Quoting Owen Netzer , Bishop of the White Night
Very good, Alpha! Just to confirm: He has no set form, and as long as he has the plasma cannon and sword, he is OK? And is he a strategist? Because the Rift Team needs one.
He may as well be a cross-breed of Vulcan. Being a machine, he has little imagination (And is trying to find an upgrade to give him some), but can statistically predict the actions of the enemy very well, and is also, practically, a walking encyclopedia. He really has no set form, but as long as he has A plasma launcher (can be anything as long as it shoots plasma XD) and A tech-pick (described above: basically a two pronged object that fits onto his right arm or hand.) You're good.