I entered a VK ask group some time ago where you pick a character and write responses regarding them... So I picked Juppi/Bruce. He was really funny to me and his absurd backstory popped a lot of stories in my head. Canonically, his stock portfolio plummets during a business phonecall, while his wife was giving birth. This lead me to think that either the wife was too docile, or she was equally workaholic. Seeing how fidgety Juppi is, I settled with the latter. They're snakes to other people except each other.
So after hitting the mental asylum, he's assigned to work as a bank-teller to return to society again, all the while raising a boy and crossing his fingers that he'll too become a stockbroker one day (he will not). It's a Kahn/Kahn Jr. dynamic.