Non-Canon Alert! The subject of this article originates from non-canonical sources. To find out about what is considered "canon" see LOTR:Canon.
Ugslap is a Goblin from the Misty Mountains. He was a Gate guard and Balfor sent Bilbo Baggins to bribe Ugslap to open a gate. Ugslap agreed to open the gate if Bilbo would bring him the wart-stone from Crugbit. However, when Bilbo returned with the stone, Ugslap opened the gate and attempted to kill Bilbo. Though Bilbo fought with, and defeated him.