Knowsall was a device that could absorb the mind. Knowsall was created by Jonah Gripton to feed the Memeovax. It was able to wipe or control the minds of others. Jonah placed the Tenth Doctor in it but he was able to resist its control. He turned up the power and it exploded. (COMIC: Thinktwice) Retrieved from "https://tardis.fandom.com/wiki/Knowsall?oldid=1874824" Categories: Mind control devices + cat Cancel Save Community content is available under CC-BY-SA unless otherwise noted.