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.
In the anime, Garp said he has eaten 842 donuts without sleeping or taking a break because he was trying to beat a world record.
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.
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.
In the 5th fan poll, Garp ranked 74th.