G+ official tagline is "Google+ makes connecting on the web more like connecting in the real world."

Google has not required Real (legal) Names for quite a while now. Google requires your "Common Name", which is the name you use with your friends, family, or coworkers. And there is an undocumented policy that the name has to look "middle-class", have 1-3 spaces in it, and not look too artsy.

http://support.google.com/plus/bin/answer.py?hl=en&answe...

If your friends call you Mini Kites, Google+ won't shut you down. And if Google+ challenges you on a name violation, you can "clear your name" with purely online-evidence, if you like.