|Occupation||Owner of Powell Motors (former)|
|Relatives||Parents: Abraham Simpson and Gaby|
Ex-stepmothers: Mona Simpson, Selma Bouvier, Rita LaFleur and Tallulah Winkelman
Adoptive parents: Edward Powell and Millani Osler
|First Appearance||Oh Brother, Where Art Thou?|
|Voiced By||Danny DeVito|
Herbert "Herb" Edward Powell is the paternal half-brother of Homer Simpson and the former owner of a car company named Powell Motors. Homer accidentally bankrupted him designing an extravagant car that costed his company $82,000 each to build. Herbert was living in poverty with hobos for a while when he had the idea to invent a device that translates baby babbling into English. He found the Simpsons house and asked his half brother Homer to help him finance the invention. It was a success and Herbert was rich again. He then made a cameo in Changing of the Guardian to leave an answering machine message that he was poor again.