persona
The role or facade that one assumes or displays in public or society; one's public image or personality, as distinguished from the inner self.
Example:
While (genericnamehere) was only a 15 year old high-school nerd, his online persona was an 18 year old harley enthusiast, complete with leather jacket, doo-rag, chrome shades, and matching attitude.
While (genericnamehere) was only a 15 year old high-school nerd, his online persona was an 18 year old harley enthusiast, complete with leather jacket, doo-rag, chrome shades, and matching attitude.