Co-Centurio Cohors Sextius Miles Rufus Astartes Edit

Initial reports indicated Sarpedon was captain of the fifth company of the Twelvers, but when he arrived at Beltagor's Deep he was co-captain of the sixth company with Glaucas. Reports also indicated that their company was double strength, serving to reinforce rumours that surviving brothers of the Victrix Astartes had been incorporated into the Twelvers.

Sarpedon is considered by his brothers to be the most professional battlefield commander in the chapter, eschewing personally glory to direct the action from his Damocles command Rhino. Few can argue the merits of this position, as his results have been consistent overwhelming victories at low cost.