Old Bro was the grandfather of Armless Bro and Weed Bro. He suffered from a strange skin disease which made his arms pale white. He appeared only in one comic, although he played a major role in another one. In his first appearance, he revealed that he doesn't have life insurance because that would make his whole family sad in the event of his death. He died on November 28th 2017, presumably due to lung cancer.
He is one of the only characters to have adverse effects from smoking, as he Died after 60 years.