Charles Percival was the director of the Newton Institute at the time that the Master was working on TOMTIT. The Master hypnotised him when he questioned his credentials. He helped lure Sergeant Benton away from the Master's laboratory so the Master could summon Kronos. Percival was later killed by Kronos. (TV: The Time Monster) Retrieved from "https://tardis.fandom.com/wiki/Charles_Percival?oldid=2951767" Categories: Human scientists 20th century individuals The Master's assistants + cat Cancel Save Community content is available under CC-BY-SA unless otherwise noted.