Don Price is the sole antagonist of Tim Burton's Big Fish. He is a former friend of Edward Bloom. Back in childhood, he swore, calling Edward's mother the "B" word, but there was a girl (Ruthie) with them. Upon Edward's determination, Don agreed that Edward should get the witch's eye. With her completely covered eye, she predicts the boys' deaths.
Later, when Edward is grown-up, Don catches him with his fiancée, Sandra Templeton, and chews him out for being with her, when he wasn't aware she was his. Don then punched him out, but Edward never fought back due to keeping his word to Sandra not to. Don beat him up so much that Sandra called off the engagement.
Eventually, as the witch predicted, Don died of a heart attack sitting on the toilet, though this is shown and mentioned between two parts of the beating scene.