Espio is a really skilled ninja, we don't really know how he got those skills, but they're put to (arguably?) good use, since he works with Charmy and Vector in the Chaotix detective agency, they're not too profesional, but they get the job done and it pays the bills sometimes. He's definitely the most down to earth member of the Resistance, he's definitely not a pesismist, but he knows when to put feelings aside to act accordingly, and is overall, quite a good leader for the Resistance's rookies.