[ninepoints]

Narcissist might be a bit more appropriate

[zogomoox]

at first I thought of "the stranger" but maybe a bit on the nose.

[sangnoir]

"The Stranger" would be starring your project from your alternate Github account.

[DonHopkins]

When working alone remotely from home, I simulate pair programming with a methodology I call "The Stranger". I sit on one of my hands until it becomes numb and tingly, and then it feels like somebody else is typing and moving the mouse!