Middle-earth Bad Popularity Cup

[Tuor in Gondolin]

Azog certainly had a more successful
resume then Grishnakh. Exactly where
would he have gone had he escaped from the
Eotheod anyway, given that he was wrong
about the hobbits having the Ring? On foot
and across Anduin to a not happy Sauron or
flown back by a nazgul?

+ + Azog

[the phantom]

Both of these orcs are worthy competitors. Grishnakh is slippery evil, and played a rather important role in LotR.

But I've got to go with Azog here. He was responsible for starting the War of the Dwarves and the Orcs, and he was horribly evil.

Nar stayed near by for many days in hiding. One day he heard a loud shout and the blare of a horn, and a body was flung out on the steps. Fearing that it was Thror, he began to creep near, but there came a voice from within the gate:
'Come on, beardling! We can see you. But there is no need to be afraid today. We need you as a messenger.'
Then Nar came up, and found that it was indeed the body of Thror, but the head was severed and lay face downward. As he knelt there, he heard orc-laughter in the shadows, and the voice said:
'If beggars will not wait at the door, but sneak in to try thieving, that is what we do to them. If any of your people poke their foul beards in here again, they will fare the same. Go and tell them so! But if his family wish to know who is now king here, the name is written on his face. I wrote it! I killed him! I am the master!'
Then Nar turned the head and saw branded on the brow in Dwarf-runes so that he could read it the name AZOG. That name was branded in his heart and in the hearts of all the Dwarves afterwards. Nar stooped to take the head, but the voice of Azog said:
'Drop it! Be off! Here's your fee, beggar-beard.' A small bag struck him. It held a few coins of little worth.
Weeping, Nar fled down the Silverlode; but he looked back once and saw that Orcs had come from the gate and were hacking up the body and flinging the pieces to the black crows.

What a ridiculously evil chap. Not only did he kill Thror, but he branded his name across Thror's face in Dwarf-runes in order to torture and taunt his family.

++Azog