Violence is the answer for this guy.
Old Man Pumkin is a Pumkin and is the father of the Hungry Pumkin. He is not as hungry as his son, but he is much easier to piss off. He has a short fuse, and doesn't go for any horse $h!t. So you better give him what he wants, or else he will bombard you with swears and make a ruckus. This Pumkin will stop at nothing to put you out of business if you piss him off. He will protest, boycott, lie, and report you to the police if he has to put you out of business.
His personality is very self explainitory, he is hot headed and quite angry. But he is not always like this, all though he is looks mean, he cares about his son Hungry Pumkin dearly.