Dad

Dad is a level 101 troll that must be fought during the Troll Stronghold quest. He is very powerful and can hit into the high 20's, but hits very slowly. When he hits there is a chance that he may do a giant swing that sends player flying through the air, momentarily stunning them. Players are advised to use the stab attack style when fighting Dad. When near to defeat, Dad asks you to spare his life. You may save him or kill him.

Since nearly all Trolls are named after the thing they first ate, Dad might have got his name from eating his father.