John Egbert is one of the main characters in Homestuck. He is a boy who, according to this page, has not been given a name until his thirteenth birthday; however, this is just a framing mechanism. In the past, he has ended letters with "-ghostyTrickster (john)". While originally given the name "Zoosmell Pooplord", the game rejected it and settled for John.
John uses an online application known as Pesterchum to communicate with his other tech-savvy friends. His chumhandle is ectoBiologist. It used to be ghostyTrickster, but he changed it to avoid the trolls. Oddly, he chose the name ectoBiologist based on a comment by one of the trolls.

This skin is John's God Tier, Heir of Breath