Nola
Nola is a massive serpent living on Upper Yard in Skypiea, famous enough to earn the title "Master of the Sky." She's genuinely old—we're talking over four centuries—which makes her one of the oldest characters in the series.
Back when Upper Yard was still attached to Jaya, Nola was actually companions with both Kalgara and Mont Blanc Noland, making her a living connection to that lost era. Her family line runs deep too: she's the grandchild of Kashigami, a snake the Shandia people once worshiped as a deity.
These days she's territorial about Upper Yard, and fans often note that encountering her is basically a rite of passage for anyone exploring the ancient ruins of Skypiea.
Content compiled by AnimeList.moe from publicly available sources.