The Mass Effect Series is based on players taking control of Commander Shepard, and, like most RPGs, the player is given choices and customization options.
In Mass Effect (the first game), players get to pick the commander's first name, gender, pre-service history (Spacer, Colonist, Earthborn), and psych profile (Ruthless, Sole Survivor, War Hero).
Clearly, Shepard can be many things, but I'm wondering what the canonical Shepard is. For instance, we know that in the Canon of Mass Effect 2, if you don't import a save file, the Council was not saved.
Does Commander Shepard likewise have a "Canonical" origin, or are these two options always under direct control of the player - i.e., without a default?