Herbert Herb Powell is Homer's long-lost older half-brother on his father's side. He was first mentioned by Abraham Simpson when Homer comes to his side after suffering a heart attack. Herbert is also the uncle of Bart, Lisa, and Maggie. When Herb was first introduced, he was a successful but lonely man. He was very welcoming, charming, and friendly when they arrived and got along great with Marge and the kids. Fanart The Simpsons cursor pack with Herbert Powell.