'''Felthius''' is a [[Death Guard]]' [[Lord of Contagion]] and commands the [[Tainted Sons]] Warband.{{Fn|1a}}

==Biography=====Origins===His origins are clouded in mystery, but the Death Guard in his Warband claim, Felthius was once a slave that was dropped in the noxious pits of the [[Plague Planet]]. Most who suffer such a fate experience horrid deaths, but Felthius thrived and eventually earned the right to join the ranks of the Death Guard. No one but he knows if this is true, but since his rise hundreds of years ago, Felthius has become a powerful and effective commander. He has led the Tainted Sons to victory over the armies of dozens of [[Imperial]] worlds and has captured an [[Emperor's Spears]]' [[Strike Cruiser]], which became his flagship, ''[[Rotbringer]]''. In battles, Felthius can be found where the fighting is the thickest, and each of his victories bring him one step closer to becoming a [[Daemon Prince]].{{Fn|1a}}

===Invasion of Korvon II===Currently his forces are invading the Imperium world [[Korvon II]], whose defenders were no match for the Warband. However this soon changed, when the [[Ultramarines]] Strike Cruiser ''[[Honour of Ultramar]] '' came to the world's aid. In order to prevent them from aiding Korvon II, Felthius had the ''Rotbringer '' ambush the Ultramar ''Honour'' and then had his Warband board the Cruiser. The Ultramarines fought fiercely to save their Cruiser though and the Tainted Sons began to lose their grip on the Ultramar''Honour''. In order to prevent their defeat, Felthius teleported aboard the Ultramar ''Honour'' and rallied the Tainted Sons to him, in order to finally claim the Cruiser. The Lord of Contagion soon clashed with the Ultramarines' commander, Lieutenant [[Calsius]]{{Fn|1b}}, but he was forced to retreat after the Tainted Sons were pushed further back and the Ultramar began to pull away from the ''Rotbringer''.{{Fn|2}}. Now that the Ultramarines have deployed to Korvon II, Felthius waits for word of Calsius' location, as he has become keen on personally killing the Lieutenant.{{Fn|3}}

Due to the Ultramarines ' efforts, however, the invasion slowed and this began to greatly displease the [[Daemon Primarch]] [[Mortarion]]. It had been on his orders that Korvon II, was invaded and , to make sure it succeeded, Mortarion sent the Chaos Lord [[Gangrus (Chaos Lord)|Gangrus]] to take command of Felthius' forces. Once Gangrus arrived on Korvon II, the Lord told Felthius' forces that they were now under his command, on the orders of Mortarion himself. This angered Felthius, who then attacked Gangrus in order to not only retain control of his forces, but to prove himself to Mortarion as well. Whoever wins will take control of the invasion, while the loser will be left cowed.{{Fn|5}}

Lord Felthius is accompanied by a '''Tainted Cohort''' of 3 Blightlord Terminators, {{Fn|6}}: