Espio is an anthropomorphic purple chameleon with a yellow horn between his eyes. His muzzle and the heart-shaped pattern on his torso are as well peach. He also has a ridge of three spikes going down his spine and a coiled tail.

During his early years, Espio was shorter and stubbier. His purple skin color was also somewhat darker and he had black eyes. He also wore green, black and yellow shoes and simple white gloves. In addition, his back spikes were teal/green in color.  

A straight-laced detective, Espio is serious, practical, intelligent and wise. He has a militaristic discipline despite being quiet, calm and laid-back. Espio is additionally portrayed as being stubborn, opinionated and self-obsessed. Despite this, he has an excellent drive to all that he does and flourishes off of peril, getting himself into threatening situations to flex and polish his ninja skills, and, due to his extensive training, he can confront these troubles head-on unconcerned by danger.

Among his colleagues, Espio's opinionated attitude serves a key role in Team Chaotix, allowing him to reign in and balance out the more optimistic and zany behaviors exhibited by Vector and Charmy.

(Vocal Direction: Bill Corkey)