Danny Wojtek is a 120 year old man/bear shape shifter whose parents were victims of the Russian famines of the 1920s and he never got over the whole 'villagers ate my father' thing.
His idea of youthful shenanigans was living his life as a bear for years and seeing how far he could push some Polish soldiers before they started getting suspicious that maybe this bear was shifty. (Spoiler alert, they never got suspicious and promoted a literal bear to Corporal).
After retiring from the army and turning human again, he shied away from humanity and society in general, until he wound up in Kingdom Come, a gruff and grumpy shape shifter forced to exist around other people. Well. Not exactly people.