Pig's dad is Pig's biological father and Pig's Mom's husband.
Pig's dad shows great amounts of happiness towards Pig. He can sometimes get impatient at things as well. He is claimed to be a model for Calvin Clam Underpants, but ended up lying after all.
Pig's dad looks similar to Pig, but he is very overweight and has less hair than Pig. He is quite sweaty (and hairy). He also wears a white tank top with a tie around it, and tighty whities but no pants or shoes.