Who is a "JoBro"?

A JoBro is one who:

• is best friend of the main JoJo
• is (often) the first protagonist to fight JoJo
• takes on the main villain of that Part
• dies for JoJo

 and there can only be one JoBro in each Part.

Who I think are the JoBros (except Okuyasu, they are my favorite characters of each Part):

Part 1:  Will Zeppeli

Part 2:  Caesar Zeppeli

Part 3:  Tenmei Kakyoin

Part 4:  Okuyasu Nijimura

Part 5:  Bruno Bucciarati

Part 6:  Narciso Anasui

Poll (anime only): https://www.strawpoll.me/17976641