Hi Guys.
I'm about to launch a digital product and accompanying mailing list. I was wondering if you guys could help me out with something before I start.
I do not want to be the face of my product or my brand. I am extremely uncomfortable with the idea of being a public figure, plus I don't have an interesting backstory or experience that would make me credible in my niche.
I've come across this thread, where Vortex and Caurmen both said that it's possible to use a pseudonym to establish credibility in your niche while also maintaining your privacy.
What I would like to know is how I can come up with an avatar to be the face of my brand. I don't want just a pseudonym and a stock photo. I want a complete character. One with a name, image, backstory, and writing style.
How can I create such an avatar? Also, how can I do it without getting into legal trouble? Caurmen mentioned in the thread that I can get into trouble for falsely representing myself. How do I avoid that, while also giving my avatar a believable story that gives the impression that he (or she) is an authority in the niche?
Thank you guys very much. There doesn't seem to be a whole lot of stuff written on this subject. I am grateful for any advice you guys might have.
Better to use your own story but under a pseudonym.
Cartoons are widely used for this ... get an artist to draw an avatar for you, based on your real photo ... this way it will be very hard to link it to the real you, but should you reconsider and decide to go public, the shift will be very easy since the avatar actually would look like you 
As for establishing yourself as an authority ... provide content that has value, do proper research, get to know your niche ... so you can actually write stuff that makes sense. Or get someone to write it for you, or at least edit it for you ... that's what politicians do all the time. You can also use the "research paper" approach ... so use the knowledge of others, use their quotes to support the message you want to get through.
I think Wall Street Playboys are a good example. Not necessarily a cartoon character but a pretty good brand and good content that their target audience really likes. http://wallstreetplayboys.com/
And they also show that the character/brand doesn't have to be directly based on you.
Basically, staying mostly anonymous shouldn't be the hard part - having a quality product people want will almost certainly be the bigger challenge.