From Warhammer 40k - Lexicanum
Venerable-Praefectus Oramas, Archon of Flame, was a Contemptor Dreadnought in the Dark Angels Legion, during the Horus Heresy.
He was a mere initiate of the Firewing before his injuries saw him interred within a Dreadnought during the Great Crusade. However he is noted to have gone on to wield a number of rare weapons, such as the Conversion Beam Cannon and Kheres assault cannon.
- 1: The Horus Heresy Book Nine - Crusade, pg. 127