Appearance-
Robed and cowled, Macharius' has a driving need to become more machine than man. He longs to leave his flesh behind, and thus gives no thought to it other than how to interface more blessed components of the Ommisiah. What's left of his original form is average height and lean of build. There would be a feral look in his eyes if he could find them.
Background-
Macharius grew up a criminal on the fringes of a Forge World. Not knowing his parents, or remembering them, the gang was all he had. Swept up in an Arbites raid, Macharius was placed in hard labor and forced to face harsh reality on an Imperial Forge World.
When he had the temerity to fix a broken piece of equipment he should have been executed, but the Tech Priest who saw this was of a more radical bent, and instead enrolled Macharius into the Mechanicum's fold. Having never been exposed to the Imperial Creed and with a radical Tech Priest as a mentor, it is no surprise that Macharius grew to be more free willed than the Mechanicum or Ecclesiarchy likes, and he has learned at great cost to not voice his opinion freely.
For the second time in his life, Macharius found himself involved in an Arbites raid. This one led to the death of his mentor and Macharius fleeing on the first vessel he could find. Eventually making his way into the employ of a Rogue Trader, Macharius has given his former mentor's name as his own, and sworn to make his fortune without the aid of the Mechanicum.
His birth name long forgotten and his face and features heavily cowled and modified, Macharius does not speak of his past. His loyalty is to his Rogue Trader, and his burning desire is to learn and expand the depth of human knowledge, vindicating his beliefs and insuring that his mentor's name lives on in Imperial history.
Personality-
Macharius is jovial and friendly. He always takes time out of his day to greet those he meets in the passageways and rooms, and not a machine spirit in the entire ship hasn't met him at least once. Occasionally biological life forms attempt to interact with him, and at those times he does his best to remember how to be friendly towards them, but they speak so slowly it frustrates him.
