This is probably more for the people who are more into their RPGs and such, maybe even tabletop games, but I just figured it would be interesting to see if you take on a particular role when gaming? For me, I now have three:
Urby (Urbanebula) aka. Me
Alignment - True Neutral
So, when playing titles from the Fallout or Elder Scrolls series, I typically try and play as myself the first time around. I try to be good as often as I can but for the most part I'm out to get as much money as possible, meaning I snatch up items of value or any cash that might be lying around, even if they are considered as "owned."
For the most part I tend to side with the most lawful entity. In Fallout New Vegas I signed up with the New California Republic and used their armour and weaponry for the most part, keeping my distance and gunning down anyone that threatened innocent life. In Skyrim, it was the Imperial Legion who I joined, though at the start of the game I wasn't overly keen as they DID try to execute me. However, I have no qualms about taking advantage of these groups either, stealing unguarded tech or weaponry for myself. As with Fallout, I keep a safe distance, using a bow and keeping to the shadows where possible.
Aluben (nebula backwards, you see?)
Alignment - Chaotic Evil
Usually my second play through is using an alter ego of sorts, who goes by the name Alubenabru or simply Aluben. Often a female character with jet black hair who favours Melee combat. In Skyrim she often wields a great-sword and heavier armour. In Fallout, a straight razor for getting up close and personal to her foes, also cannibalizing fallen friends and enemies.
Generally unpleasant, she seeks out other unpleasant people, but they are by no means her allies. A good example would be an assault on a prison in Fallout New Vegas. After the battle, one room was littered with corpses and occupied by a single unarmed doctor. Cannibalizing bodies in front of anyone, friend or foe is considered unnatural and doing so would have caused the doc to call the guards. As such, she slit his through and proceeded to devour the flesh of him, as well as the others lying dead in the room.
It's interesting how playing melee only, in a game filled with guns and bombs, made my playstyle so much more brutal. I had to make sure I got the first shot in, and when they were down I would keep wailing on my target until their head caved in.
Lord / Nord Casserole
Alignment - Chaotic Evil
Lord / Nord Casserole is the character I use in the series I upload to YouTube, such as Rimming the Sky (Skyrim) and Falling Out (Fallout). He is a different kind of Evil to Aluben. Generally pompous and self absorbed, he is mean and unpredictable. He generally sees other people as idiotic and a hindrance to his tasks. His only real friends in Skyrim are the Horkers (Elder Scrolls equivalent to a Walrus) that line the shores, referring to them as simply "My little Horker friends."
Largely led by greed, he takes on various tasks in search of gold and other riches, often switching sides DURING said tasks in order to get the best deal for himself. One such example, entering a mine recently taken over by a clan of bandits only to strip it of all the ore, then butchering the bandits to collect a reward.