Maber Castigon is an ex-counterpart, previously assigned to Elm Caden. Their working relationship ended when Castigon deliberately caused huge numbers of civilian casualties and attempted to place the blame on Caden.
Castigon spent ten Solars in an Imperial Combine prison before being released in March 3745 ELC. Immediately on his release he set about tracking down and killing the Shards who had given evidence against him at his trial. It was this campaign of terror which led him to be present on Meccrace Prime during a planetary assault by the Shaeld Hratha, which in turn exposed him to the Rasa virus (→TRD).
Castigon's exact biological status — his relationship to Voice, his mental stability, and his physical capabilities — are not currently known.
Castigon demonstrates some psychotic and sociopathic tendencies. He is tenacious, vicious, callous, and lacks empathy. He appears to be unable to accept responsibility for some of his own actions, in particular those which led him to be incarcerated, and will gladly lie to achieve his goals.
Having murdered several of his erstwhile colleagues, Castigon seems to have adopted a cavalier attitude towards the value of human life. Since leaving prison behind on Urx, he has needlessly killed several people.
Originally from what was once known as Russia, Castigon did not leave Earth until the age of sixteen Solars when he migrated to Kelvestyr. There he attended the Imperial War College, and from the outset he only showed interest in the counterpart pathway.
At the age of twenty-two he successfully graduated to the Counterpart Academy, where he studied the specialised curriculum for two Solars.