- Huge Walker Vehicle. Counts as the Tier 1 Titan Unit of the Witch Hunters. Not affected by covers.
- House Vyridion is an Imperial Knight House, originally vassals of the Emperor's Children during the Great Crusade.
- Primarch Fulgrim, corrupted by Chaos and part of Warmaster Horus' rebellion, deceived the Knights of House Vyridion to attack the Iron Hands, claiming they were the ones who rose up against the Emperor.
- The Lords of House Vyridion were suspicious of such claims and hesitated following such orders but was not until they sent an envoy to Holy Terra and learnt from the Emperor's own Bodyguards the truth of the Horus Heresy.
- Ever since, House Vyridion has renounced their personal union with the Emperor's Children and formed a new one with the Custodes, now fighting as close allies for the sake of the Imperium.
- With the coming of the Indomitus Crusade, Custodes task forces have pledged their support to Regent Guilliman's cause. This includes House Vyridion, whom have opted to help the Sisterhood, as the two armies share a common wish to redeem themselves for the sins of the past.
- Effective against all targets. Unlike other Knights, it comes with a pre-set weapon selection. Its Las Impolsor makes short work of any enemy armour while its quad Icarus Autocannon array decimates Infantry and Aircraft alike. Has an Ion Shield that protects it from incoming fire as long as is active.