Irongron

Irongron was the lord of a castle in 13th century Wessex. When he and his troops saw a bright light in the sky, Irongron immediately claimed it for his own, naming it "Irongron's star". He and his men followed the "star" as it fell to earth. The "star" was actually a Sontaran spacecraft, which disgorged it's occupant, Linx, upon landing. Irongron immediately challenged Linx to a fight, naming him Star warrior. Linx turned the fight down, and instead bargained with Irongron, asking him for a place to hide his ship and the means to fix it, in return for some of his advanced weaponry, an offer which Irongron readily accepted.

Over time, Irongron grew to despise Linx for not coming when he wished and repeatedly insulting him. He also hated Edward of Wessex. His men captured a scribe from Edward, whom Irongron ordered to be put in the dungeon, where he later died. While climbing the wall of his castle one day Irongron was shot at by an archer called Hal, sent by Edward. Irongron challenged him to face an entirely metal robot, a gift from Linx. Hal won, when the Doctor shot the control device. When the Doctor was running out of Irongron’s castle after creeping around, Irongron tried to kill him before he escaped. Irongron failed as Hal disarmed him.

Incensed, Irongron then launched an attack on Edward's castle, which was quickly repelled, forcing him and his troops to retreat. Irongron was then given a second warrior knight by Link. Irongron tested the knight by fighting it and losing to it, only to discover the Doctor was wearing the suit all along. In retalliation, Irongron had his men try to shoot the Doctor, who once again escaped.

Irongron and his men were later drugged with sleeping potion like the rest of his men by Sarah Jane Smith. Irongron woke before the rest of his men, and accused Linx of betraying him, attacking the Sontaran. Linx then killed him. (DW: The Time Warrior)