On my other site I use a blue man because I love the whimsical nature that it adds to an otherwise heavily-text based website.
Here's a fun site that offers you the possibility to create your own graphic image of yourself, adding hair, clothes, accessories for a reasonable price: DesignherGals.com. Here's what I recently created and purchased for use as a personal email signature:
My friends tell me it looks like me, and it's fun. There's even a pic of Huey my cat…
They can also custom design an image for you, to include more than one pet, or two business partners, etc.
Accessories include laptops, phones, etc. Of course you can choose body type, and clothes. You can also create a guy.
DesignherGals.com is a great example of a do-it-yourself site that's fun and easy to use. The women who started the site have an interesting story to tell, and they share it with readers as an example of content marketing at its best.
They support breast cancer research charities. Why don't you go over there and play around designing your own character?