— Garp about Roger[1]

He was said to be fearless and those who witnessed his execution even claim that he smiled just before his death. Gol D. Roger's personality is often commented by people who knew him to have been similar to Luffy, this is best shown when he meets Rayleigh and ask him to join him despite having no idea how strong he was or even what role he would have on his ship. Ace revealed his lineage to Whitebeard, who noted that Ace's personality wasn't much like his father's. However, they both share the "Didn't run" from battle: Garp stated that Roger would not run away from an enemy in order to protect his crew from danger. Roger was also a man who loved big, flashy things and reveled in his title of Pirate King despite his oncoming death. While not portrayed during any of his appearances, he can be a merciless enemy when he got angry. This was further evidenced when he killed all ofSquardo's crewmembers personally for unknown reasons. Roger was very quick to anger and he would retaliate for something as simple as an insult to his crew however small it might be. Garp stated that an angry Roger can be a violent, selfish, and short-tempered man, but his actions had been pure and straight, just like a child's and that he was lucky to survive and become the Pirate King despite his extremely reckless nature. Luffy has a similar personality in terms of recklessness and Ace had a similar personality in terms of getting easily angered by insults.