Who, if any, was a member of more than one band, Ric Ocasek or Pepper Keenan?
Ric Ocasek:  He is best known as the vocalist, rhythm guitarist and songwriter for the rock band the Cars. Pepper Keenan: Pepper J. Keenan (born May 8, 1967), is an American guitarist and vocalist, best known for his work with heavy metal bands Corrosion of Conformity and Down.
Corrosion of Conformity and Down.