Not much is known but according to Stinky, except that he was raised by Snotty Boy since he was an egg.
Stinky appeared to be vicious at first due to being raised by a cruel Snotty Boy. However, he was also miserable because Snotty Boy occasionally bullied him, such as putting him in a dress and calling him names.
He later had a change of heart when Pip stuck up for him.
Stinky is a brown and yellow snake with long fangs.