Alright, gonna have to make this quickly!

Name: Edwin Venator
 
Gender: Male

Age: 30

Appearance: [img=http://evolveent.com/wp-content/uploads/2010/04/edwin.jpg]
Edwin appears rather unassuming compared to the rest of the crew, wearing a stained medical jacket over a bloodied suit of flak armor from his days in the Imperial Guard. He has a scar on his back from when he was stabbed by a mutineer. However, he's not to be underestimated; he knows his way around the body with his knives, and he's a good shot with his guns.

Equipment:
Lasgun and Laspistol
2 Combat Knives
Diagnosticator (Diagnostor) - The Diagnostor is a sophisticated medical cogitator used across the human-settled galaxy. It can detect and diagnose almost every ailment known to the Imperium, and can be incorporated into medical kits, Servo-skulls, and other dedicated medical Servitors. Any individual trained in medical knowledge in the Imperial Guard understands its use.
Injector - Edwin's injector is a gauntlet, with a machine holding several injectors mounted on it. The machine can rotate in order to switch between drugs.
Medikit - Small, compact, and reliable. Each comes with a diagnostic cogitator called a Diagnosticator complete with bio-scanner and bioprobes, along with chemicals, drugs, and other means to treat a variety of injuries and ailments.

Personality: For the most part, Edwin is a quiet, polite man who wears a small smile on his face almost all of the time. He tries raising the humor of his teammates or simply making conversation from time to time, but he knows when to shut up or speak out. He is a respectful, submissive type, used to taking orders from superiors whom he trusted to be in the right and know what they were doing. He is inquisitive and curious, asking questions that he thinks he can ask when his curiosity is piqued. Most wouldn't expect a man of such a gentle disposition to be part of an Inquisitor's retinue, and Edwin himself is still a little shocked by the Inquisitor's decision. He has a budding attraction towards Interrogator Cassius, but keeps it quiet out of both duty to his Inquisitor and fear of how either master or apprentice would react to his feelings. He doesn't know if they know about this regardless of his silence, but he has occasionally guessed that they might know. 

However, Edwin has a dark side. Fascinated with the human body, he takes as much interest in healing as he does in torture, casually talking to victims and explaining what was happening to them as he took a blade or a needle to them. However, this is more of a coping mechanism against what he's told to do, rather than a form of malice or sadism. He prefers healing over torture, but will do what needs to be done in the name of the Emperor. 

History: Edwin was born on a relatively well-to-do planet in the Imperium, living a comparatively good life before being conscripted into the Imperial Guard. In an attempt to avoid direct combat, he tried specializing as a medic, but he found that he craved the opportunity to put his skills into good use, taking pride in the fact that he was saving lives. 

Then one day a mutiny was suspected among his regiment, and Edwin's knowledge of the human anatomy got him picked as the Commissar's assistant in rooting out suspected traitors. Some of these suspected were his close friends during his time in the Guard, but Edwin slowly created the other side of himself in order to fulfill his duty and try to drown out the screams and whimpers. When the conspirators were all found and executed, the Commissar recommended Edwin to his colleagues, where he learned more about chemistry, biology, anatomy, medicine, and other fields he needed in order to improve his skillset along the way. Eventually he found himself before Inquisitor Xersus, and has been by his side ever since.

Position in Retinue: The actual medic of the group, though he is also versed in poisoning and torture if the Inquisitor requires this of him. 

So, how's that?