The Guido

"The Guido" is a character met by Demyx, Zexion, and Larxene when they visit Seaside Heights. There, he antagonized Demyx yet was angered by Zexion and lured into a trap, where he was then killed (with his friends) by Larxene and studied for the Virus.

He is later mentioned again by Vexen, and was used to learn that the Virus cannot infect the dead.