Sha Gojyo.

Criteria (bold = applies to this character)
1) Long hair
2) White (pale, blonde) hair
3) Bad guy
4) Snarky
5) Sophisticated
6) Position of Power
7) (optional) usually wielding a sword/katana/knife/etc...

One of the four main characters of Gensomaden Saiyuki (and it's myriad of sequels and OVAs), Sha Gojyo is easy enough to fall for.

He has a sort of rogue magnetism that draws most people in-and that's what he's counting on. Gojyo is an extreme womanizer, as stated by himself and everyone around. He flirts with every pretty girl he meets, but his attempts to go further are usually thwarted by one of the other members of the traveling party. Even when by himself he has a tendency to turn down further attentions which has led many a fan girl to speculate about the true nature of his orientation.

~not what it looks like, but hilarious none the less~

Gojyo is best friends with Cho Hakkai (nee Gonou), antagonistic but really rather doting towards Goku, and understanding if not the thorn in Genjyo Sanzo's side. He trusts his companions with his life, and they with theirs.

Gojyo is actually a half-breed, being the product of a human mother and a demon father. All half breeds are considered children of Taboo-and are thus rare but easily recognizable. They all have Gojyo's red hair and red eyes. When Gojyo came to live with his step mother, she often cursed and beat him for it because it reminded her of her husband's infidelity. Gojyo's mom was the mistress.

But none of that really gets him down. He has melancholy moments-usually around crying women, or red flowers-but he's a generally happy and fun character.