Gabriel

Gabriel is a social worker who helps families get along better.

History
He was employed to keep the Simpson family together and took them to the woods. In the woods, the Simpson family saved Gabriel and Homer thought he was an angel. After making sure the Simpsons were still together and happy, Gabriel was disgusted to find out that Homer had a Vegas wife, Amber Simpson and left.

He attended Lisa's meeting about Lake Springfield.

Behind the Laughter

 * Gabriel's cameo in The Simpsons Movie wearing an all black outfit as opposed to his original white outfit.
 * Homer thinking he's an angel may also be a reference to his name from the angel Gabriel from the Bible.