Forgotten Realms 5th Edition
Think Balin, from The Hobbit.
Rudiger worked for fifty years as the miller and chief of the bucket brigade for a small hill dwarf settlement before it was sacked by a rampaging red dragon. The town burnt to the ground and hundreds died. Rudiger wants to find that dragon, slay it, and return the wealth to the survivors of his town. The problem? He is old, and just the guy who ran the windmill.
(I’ll apply a more specific set of character traits before game time.)