Two holds a heat prod. (TV: The Ark) Heat prods were weapons used by the Monoids. They were developed by Monoids aboard the Ark with the human guardians supporting their work. The Monoids used the heat prods in their revolution when they took over the Ark. (TV: The Ark) Retrieved from "https://tardis.fandom.com/wiki/Heat_prod?oldid=1849051" Categories: Handheld weapons + cat Cancel Save Community content is available under CC-BY-SA unless otherwise noted.