Bennetto was the technical expert and pilot of Amanda Steele's pest control team.
He and his team were hired by Georgia Donnelly, the owner of Funworld after the skeleton crew of Funworld had suddenly ceased communication following a message talking about a "predator." This predator turned out to be the Vashta Nerada who had wiped out the entire skeleton crew. He, his team and Georgia met the Fourth Doctor on Funworld. After investigating the staff room, the lights went out and Amanda sent him to fix it. He managed to turn on some backup power, but he noticed a corridor, that should've been lit with light, was completely dark. He was devoured by the Vashta Nerada as he investigated. (AUDIO: Night of the Vashta Nerada)