Luffy is an out-going person who loves talking and eating too much. But doesn't gain any weight which was surprising. He's 5'8, tan, black-haired, and wears a straw hat.

Sabo is an polite, gentleman who is nice around others. He loves his brother. He's 6'0, a bit tan, blonde, and wears a top hat. He's the middle child.
Ace is an cocky and confident man.

He's an easily recognizable by his looks, with him being a bit pale, black-haired, 5'11, and is the oldest.