''Don't you know the Dewey decimal system?!''

Update time! So it turns out my OC has a brother. A psyker at this one!

The storyline goes that the two are twins (original right?), born on Baal Secondus.

Ephraim was the more taciturn of the two brothers. Preferring a more methodical approach to problems. He describes in his own words as this being the reason his brother was selected for the task force command. Hadrian knows how to act on his feet and is a charismatic battle brother if there ever was one.
Ephraim feels no contempt though, in fact he prefers this--As Hadrian is often in need of his brother's wisdom in drawn out campaigns.

The task of requisitioning an epistolary for the task force was an arduous one, especially for one so talented as Ephraim. But eventually the request was permitted by Mephiston himself.

His standard battle gear consists of a uniquely fitted terminator suit designed to incorporate the psyker crystals of librarian terminator armor and a psychic hood as well. he disdains firearms but keeps his storm bolter as a necessity, preferring to use his talents channeled through through his mighty force staff, World-Burner.