Jorgen: Yes... I remember!... I was a powerful general in my home country. The fierce assaults I plotted led us to countless victories... However, the constant focus on war began to eat away at me. To restore my equilibrium, I erased everything about myself... even my memories.
You can talk to Jorgen in Cafe Moondust after being hired to obtain his Parameter Bonus. He will be standing on the second floor to the right of the stairs.
Once you complete the quest Amnesia. His initial stats and class depend on the items given, see the quest for more details. Earliest availability after entering Undelwalt.