Character proxy info for my own reference since I'm writing it up at work, feel free to read though
Character Personality and Interaction Style
Pragmatic to the core, Michael has little time for the eccentricities that some of his more senior colleagues tend to develop. As a result of abandonment by his sire and being left for decades to discover his vampiric nature for himself (before inevitably being taken into Kindred society) Michael tends to do what needs to be done, rather then what might be expected of him. He is no fool however and will provide lip service where necessary. After all, it's a lot easier to sneak around with free reign when you're in the good books of the local powerhouse. Common sense is something that Michael holds dear and as such he has great respect for anyone who shows this increasingly rare trait(actual common sense, not the merit).
Michael tends to start everyone off at a neutral disposition until they give reason for it to change one way or the other. While a member of the Lancea Sanctum he does not have extreme prejudices against any member of another covenant, preferring their actions to guide his dealings with them. That is of course not to say that he won't be watching them closely.
At first glance Michael may appear aloof, preferring to say little and watch the dealings of others before making introductions. Once bonds are made however Michael is generally quite friendly and may even make the occasional joke.
When battle breaks out Michael 'fights' very defensively, preferring to offer long range support and committing to being fully defensive when confronted up close until an opportunity for escape, or at the very least relocation arises.
As for his specific role in the siege Michael would offer his services as a scout and medic. Also in this situation where kine are in short supply Michael will take advantage of his ability to feed from animals and create vitae reliquaries for others who must feed from stronger blood.
Character's goals for the proxy
Michael has heard from Lukas Von Saenger that members of the Brood have been displaying powers similar to other covenant rituals, including Theban Sorcery. Michael wishes to investigate this and see for himself. In addition he also wishes to extend his knowledge of other kindred and meet possible new allies, be they from the Lancea Sanctum or otherwise.