Tom, Bert, and William

Tom, Bert, and William Huggins were three Stone trolls that Bilbo Baggins encountered in the Trollshaws, in Eriador, while with Thorin and Company on their quest to regain the Lonely Mountain (Erebor). Like most of their kind outside of Mordor, they were vagabonds who robbed, stole, and killed for what they needed or wanted. Their age is unknown. They were destroyed by sunlight which turned them to stone with the aid of Gandalf's trickery.
== Biography ==
==== Quest of Erebor ====
The three trolls are encountered by Bilbo, Fíli and Kíli after having stolen several of the dwarves' ponies. Fíli and Kíli stay back, while Bilbo tries to steal a blade from the trolls to cut the ponies free. When Bilbo is caught accidentally by the trolls, the dwarves charge them and a small skirmish ensuses as Bilbo tries to free the ponies. However, Bilbo is caught, and when the trolls threaten to tear Bilbo apart, the dwarves surrender and are put into sacks. Half of the dwarves are put onto the spit to be cooked over the fire, while the others, including Thorin, along with Bilbo, are left on the ground in their sacks. Bilbo spots Gandalf sneaking around, and begins to discuss with the trolls ways of cooking dwarf in order to buy time. As this plan starts to fail as Tom attempts to eat Bombur raw, Bilbo quickly states the dwarves are infested with intestinal parasites to try to stop the trolls from eating them, but they do not get easily fooled, especially William. Then Gandalf appears, and as the trolls curiously wonder who he is (and if he can be eaten), the wizard using his staff splits a rock that was shielding the trolls from the sun's light as it rises, turning them to stone. After the company was set free, Thorin and Gandalf believe that the trolls never ventured this far south from the Ettenmoors since the Second Age, when a darker power ruled the lands.
==== Legacy ====
On the way to Rivendell, Aragorn and the four hobbits Frodo Baggins, Samwise Gamgee, Meriadoc Brandybuck, and Peregrin Took encountered the three trolls that had been turned to stone seventy-seven years previously, and the hobbits momentarily thought them to be alive.
Notably, Frodo says that the trolls were arguing about how to cook "thirteen dwarves and one hobbit" when they were turned to stone. However, they were actually only arguing about how to cook the dwarves, as Bilbo had escaped from their clutches during the fighting, and was hiding in a nearby thorn-bush during the trolls' argument. This could be an error on Tolkien's part, or Frodo could have remembered the story wrong.