Tomi Undergallows, or "Grin", as he is often known, is a male halfling rogue from the land of Calimshan. An escaped prisoner from the Neverwinter Peninusula District Prison, he is wanted for a number of crimes, including 'deflowering' a Pasha's daughter and pickpocketing. Carefree and mischievous, Tomi rarely seems to take things seriously. Both male and female characters can become good friends with him if he is hired as a henchman, but romance appears to be out of the question. While Tomi is primarily from the original campaign, he is also an available henchman in Chapter 1 of Hordes of the Underdark. He is rumored to have been murdered shortly after leaving Waterdeep by his "nemesis" Sammy.
Source: Wikipedia, "List of Neverwinter Nights characters", available under the CC-BY-SA License.