#Garp is one of the major figures, along with Sengoku, Shiki, and Whitebeard, from the times when the “Pirate King” was still alive.
#Aside from Luffy himself, Garp is the only Romance Dawn V.2 character to actually appear in the storyline.
#Garp’s laughter style is that he adds either “Bwa” or “Wa” before the haha part. This is somewhat unique as most characters only stick with one laughter style (the other being Dracule Mihawk).
#Garp appears to have a dog animal-theme, as shown by his mask and his ship.
#When he was a child and a young Marine, Garp resembled Luffy, though more muscular than his grandson. As a child, he wore a tropical button shirt with shorts and wielded a pipe staff. Garp already had the scar on his left eye in his childhood days.
#Oda drew Luffy’s possible appearances in his adulthood in two different timelines, at ages 40 and 60. Given how Garp resembled Luffy as a kid, it’s fitting that Luffy would resemble Garp as an old man.
#Due to his grudge against him, Chinjao wants Garp to suffer the pain of losing someone close to him. Ironically, Garp already underwent that pain upon losing Ace.
#A group named Rocks is mentioned by Garp in Chapter 907. They are a group of people who were prominent 40 years ago, before the Pirate King Gol D. Roger came into power.
Garp is connected to them in some way, with Hina suggesting that he got the distinction of “Hero of the Marines” from dealing with them.