I’d like to think that canonically Marco from one piece has died at least three times.
Why do I think this? because bro has gone through at least three design changes before we meet him in Wano again after the two year time skip. 
Every time he’s died and returned, he’s gotten marginally hotter. Wano being his hottest form yet.
He also obviously with each rebirth becomes stronger and stronger.
Which is why he was able to take on Kizaru during marineford.
It also makes his strength earned rather than given because he’s had to die in order to become stronger. 
(Don’t ask me why then in the flashbacks hes blonde…)














