Jason is a human boy who works in a tavern in Betrayal at Krondor. He can first be encountered in Chapter 1.
Jason works at the tavern in Romney.
When spoken to, Jason fears the party is "the Collector" arriving to take him away for not working hard enough, as he has been threatened by the tavernkeeper, for whom he works with no pay.
The party learns that Jason witnessed Nighthawks entering the tavern and was told by them to leave, and that the tavernkeeper later took the opportunity to blame him for the massacre because anyone under the tavern's roof is the responsibility of everyone who works there. The party assures Jason that they are not there to punish him and let him know they might have more questions for him later.