So do you really want to know about Lionheart0? Really? Suit yourself then.
His real name Joshua, no nickname present at the time. He came up with the Lionheart0 name by being completely unoriginal, getting Lionheart from Final Fantasy VIII and sticking a random number at the end of it because that's what all the cool kids do on the internet. Recent college graduate who is now working full time at Florida State University in Student Affairs.