Joukahainen came to these parts of World after he had an ass whoopin by Väinämöinen the Elf in a singing contest where Väinämöinen sung Joukahainen into a swamp. Embittered by this Joukahainen swore revenge. He's feelings towards elves are somewhat colored by this. Like all dwarves Joukahainen has quite good appetite for some strong dwarven ale and is very fond of mining in which he excels.
First thing Joukahainen remembers from these parts of the world was the Inn in
ArboRea. It must have been quite a party since he has no recollection other than he boarded a ship quite a some time before waking up in that Inn. People of
ArboRea seemed nice enough and when Morgor the Highpriest of Asral asked him to join ranks of Asralites, Joukahainen accepted. Currently Joukahainen tries to serve his Lord but at the same time he runs his own mining company. With his new found powers and skills he is sure to kick some Väinämöinen ass. Meanwhile orcs will do.
Comment: That's straight from Finnish mythology, Kalevala (by Lönnrot, Elias)