The troll is a creature with many variations but all quite ugly and malicious. The gigantic troll was often dim witted and lived in caves with a fondness for human flesh. Dwarf sized trolls were not as large or as strong as the giant trolls, but just as dangerous.
A nasty habit of the troll was to steal babies and seduce wives. This usually created an unpopularity of the troll with mankind. A troll could be warded off with mistletoe and byre and bonfires.
Trolls lost their folklore status with the advance of Christianity. These ugly creatures were replaced with more devil-like demons. Though the trolls were horrible in their own right, the stories were old in nature and were not able to frighten people as they had in the past. The new demons brought new stories and new fears that overpowered the old magic of the trolls.