The Agravain (アグラヴェイン, Aguravein) is a custom Knightmare Frame piloted by the mysterious masked man Wizard, who supports the terrorist organization Peace Mark. Considering that Wizard's true identity is "Oiaguro Zevon", the leader of Britannia's secret "Pluton" organization, it is highly likely that this Knightmare Frame was developed in secret using Britannian technology and engineering, as even the members of the Glinda Knights taskforce who are testing out new prototypes are unaware of its existence. Its design and weaponry suggest that it is the prototype of the Gareth, the Britannian mass-production model of the Gawain.