The Arbiter is an Elite who has been assigned by the Prophets to seek out and kill the Heretics. After learning the truth about Halo from the Gravemind, he pledged his allegiance to the humans, and other Elites joined his cause.
I was partially inspired by the brick-built Elites of Mandalore and The_Hurricane (Members of SSLF). I looked at my old Arbiter on Brickshelf, and realized just how bad a mini-fig Elite looks. So I decided to use my free time to come up with a decent looking Elite.
RE: Jernej: The joke of it was a member of Saber Scorpion's Forums got drunk and started posting nonsensical stuff. The topic of his thread was "i was liek nooo", hence the intentional spelling error.
Will we never hear the end of "I was liek noooo"? ;-) Anyways, pretty awesome! Brick-built Elites seem to be the thing to do these days. Actually the thing I like best about yours is the way you used that "saw handle" piece for attaching the legs. I wish I'd thought about that when I made mine... which will be posted soon, BTW. Good job!