*spoilers*
Reaver is a sociopathic parasite who has robs the best days of others' lives (including my Fable II character's) so he can stay forever young and preserve the precious looks that have some people swooning over him. Reaver is a egomaniacal despot who shoots workers for daring to question his tyranny and avarice, and forces children into factory labor. Reaver is a narcissistic, foppish fruitcake who shoots people (like Barnum)for testing his nonexistent patience. Reaver is a self-serving egotist who stole my rightful revenge against Lucien for killing my sister, my dog, my wife and my children. Reaver is a scurrilous robber baron, a blight on the face of Albion, a scabrous, dripping sack of venereal disease, and a petticoat-wearing, ass-powdering coward whose mere continued existence is a crime against justice. And now he has a swooping emo haircut!!!
I guess you could say I don't care for him. I just couldn't believe Lionhead would not allow me the choice to kill him. Despite what some think, his actions and nature make him the very definition of evil (morally reprehensible, causing harm), and considering my character was the epitome of good in both II and III, to let Reaver live and continue to kill, enslave, and vampirically steal others' life force is waaay out of character.
I agree with Vyan and Arseface: Lionhead is keeping him around because he's Stephen Fry and a necessary foil to good characters. And I'll admit, he is damn charismatic. Once I accepted the fact that Fable III is not the game where he was going to die I was actually able to enjoy his witticisms quite a bit.
But I promise you this: Somewhere, some century, he will gasp his last with my sword in his heart.