@Questioner,
The hate-filled religious crap that JG is spewing really isn't any worse than what comes from the lips of well known evangelists like Pat Robertson or the late Jerry Falwell, and a lot of other people on the religious right.
The problem is that JG considers forum boards as his own personal pulpit, and he deliberately selects forum boards where either his brand of theology is clearly unwelcome, or it's totally out of place given the topic. That tells you that his aim is mainly to be disruptive. So, he was banned from a forum board devoted to video games because he wouldn't shut up about religion, and he also wouldn't refrain from making stereotyped racial comments.
That JG "preaches" only in inappropriate places, and in the most offensive manner possible, is a dead giveaway to his real motives, which have little or nothing to do with spreading the Gospel, or saving souls, or Christianity, because he delivers his message in the most obnoxious way possible--insults and name calling hurled at other posters, repeatedly typing in CAPS, post after post of Biblical quotes typed in extra large letters, and an absolute disinterest in anything else other than what
he wants to talk about. This isn't the behavior of even a zealous evangelist--it's TROLL BEHAVIOR designed to irritate, offend, provoke, disrupt, and get attention. And, when religion doesn't get him enough attention, he throws in some provocative racial remarks to spice things up.
Obviously he likes talking about sex--he can't stop talking about it. And I don't think we can believe anything he says about his real life sexual behavior--or anything else he says about his real life. One thing I find troubling about what he does on this site is that he posts topics with appeal to younger people, like comics and cartoons, and then he throws sex and race into those discussions as well. This guy has no more intention of creating a comic book than I do of swimming the English Channel. If he were sincere about that, there are plenty of more appropriate Web sites for artists and other people who are seriously engaged in such work.
I'd call JG an internet prankster, except there is nothing good-natured or good-humored about what he is doing--it's destructive. And, he not only keeps up his unwanted/offensive/disruptive/provocative comments, on every Web site he invades, he continues to escalate them until he eventually gets booted out and banned. As troll behavior goes, using the combo of religion/sex/race is an interesting variation, but a troll is a troll is a troll...
Does the devil make you do it? 
