Cesario is a character from the anime Kiddy Grade: Truth Dawn, which is a recap movie within the Kiddy Grade franchise. He holds the rank of a C-Class ES member for the Galactic Organization of Trade and Tariffs (GOTT). At eighteen years of age, Cesario serves as the older partner to his counterpart, Viola, with whom he forms a dedicated and essential two-person team.

In terms of personality, Cesario is best known for his profound silence. He almost never speaks aloud, and for the majority of his appearances, he communicates only by whispering into the ear of his partner, Viola. He is a reserved and indecisive individual, often finding himself on the losing side of arguments with his more assertive partner. His preference for body language and quiet, private communication defines his interactions, making him a notably enigmatic presence within the series.

Cesario's primary role in the story is intrinsically linked to his partner, as his unique ability, named Driver, has no practical use on its own. Instead, its sole function is to serve as a vital source of energy for Viola, enabling and empowering her own special abilities. This creates a symbiotic relationship where Cesario's value is expressed through his support of Viola, and his combat effectiveness is entirely dependent on their physical contact and cooperation. His key relationship is exclusively with Viola, and his development is marked by his extremely rare moments of open speech, with the final episode being a notable instance where he speaks outside of his usual whispers.