Robert E. O. Speedwagon

Robert E. O. Speedwagon began his journey as a London street thug before becoming the Joestar family's most loyal ally. While he lacks supernatural abilities, his commitment to his friends remains constant from the streets of Ogre Street through the later parts of the saga. He eventually founded the Speedwagon Foundation to provide essential support to the Joestars during their battles against evil. This organization serves as a vital resource for the family throughout various crises, spanning from Stardust Crusaders to Stone Ocean.