Define cool, i will say AJ, a Olympic gold medal, after only 20 pro fights he has defended the World Heavyweight title 4 times, is highest paid heavyweight resulting in mega money in the bank, that sounds damned cool to me.
I don't think he is the best heavy around but personality wise, Joseph Parker. Nice guy, values his community and home people, humble as can be and will always make the time to talk with fans. I've met him on multiple occasions, as an amateur and a pro. Nothing has changed in regards to his personality since turned pro and earning his money. Some people might not consider him the 'coolest' guy in boxing because he is quiet, but I respect people who have the values he has. AJ seems a nice guy too, unsure about the off comments when it comes to race...but outside of that, he seems a pretty genuine guy.
Golovkin. Slick as ice, looks great in a suit, heart melting smile that the ladies can’t say no to. Rumour has it Ronda Rousey had to be followed around by a guy holding a wet floor sign for 6 hours straight after meeting him
Everything Luis Ortiz said post fight against Wilder was pure class. Most boxers seem cool and not much to separate them. We don't know them personally. We aren't tight friends with them. For example, Daniel Geale is all class. What would you point at from Devon Alexander to say he isn't as well?