Portgas D. ace

It was on the trip to Alabasta when Ace had reunited with Luffy, his brother, after many years. The Strawhat Pirates welcomed him as their own, and Ace knew that despite their little number, they were far more lethal than any pirate crew with big numbers. During his first stay, he'd already noticed that the crew contained of many unique individuals that were fascinating in their own way. The most fascinating one, so far, was his brother.

And when they finally arrived at Alabasta and he was told that they were to meet up and rejoin with another crew member who went on a solo mission for a year, he became even more invested in his brother's crew. He patiently waited with them, until they were chased by Smoker, the awfully persistent Marine. Along the chase and when Luffy was nearly caught, the boy was suddenly lifted up into the air, pulled towards a roof, where a crippled girl in a wheelchair sat.

Ace didn't have time to question what had just happened, too busy trying to pry Smoker off of their tails. When they finally reunited, Ace was beyond astonished upon being introduced to the said crew member.

She was indeed the crippled woman in the wheelchair on the roof earlier, and her ability is manipulating invisible threads.

He glanced down at her as they walked through the desert of Alabasta, "Riveting."