Editing Belisarius Cawl (section)

==During the [[Horus Heresy]]==
[[File:CawlYoung.jpg|200px|thumb|right|Archmagos Cawl, back when he was still recognizably human.]]
Cawl's first recorded appearance in history was as a Tech-Acolyte on the Trisolian system during the Horus Heresy; while he had declined several of the more visible cybernetic augmentations favored by the tech-priests, he had secretly undergone illegal brain-enhancing surgeries to make himself smarter (including a non-standard memory core given to him by a mentor who may or may not have been planning to steal his body later). Even back then, he had a reputation as a maverick for his pro-innovation stance. His best friend was Friedisch Adum Ship Qvo, and he served under Magos Domina Hester Aspertia Sigma-Sigma.

When [[Horus]] and his Legion attacked the world of Trisolian A4, Cawl's mistress defected to the traitors for fear that her secret project to make herself immortal via cloning would be lost. Cawl feigned loyalty to the Warmaster, and later took the opportunity to kill his treacherous superior when [[Leman Russ]] and the [[Space Wolves]] [[Battle of Trisolian|arrived to try and kill Horus]]. After absorbing her intelligence core and knowledge of cloning and accidentally merging with her soul and giving his brain orchestra its first member, that is.

After escaping Russ' botched assassination attempt on Horus, Cawl's stolen ship emerged from the warp sometime after the Heresy had ended, only to be immediately shot to pieces and boarded due to it being the hyper-paranoid years of the Scouring. He was detained and interrogated on Ryza, before eventually being exonerated by the testimony of a Skitarii Alpha he'd helped out during the earlier fighting, resulting in Cawl being marooned there for a few years doing bottom-rung assignments for the local Tech-priest hierarchy until he was given an offer he couldn't refuse by the aforementioned Ezekiel Sedayne, whereupon Sedayne became the second member of the Cawl Philarmonic Brainwave Orchestra.