My very first account had an Invader Zim icon. I don't have the picture anymore and I don't think I'd be able to find it ever again.
The first one I had on this account though was this picture of Death the Kid. Which was preceeded kwa like another year's worth of Death the Kid icons... :I Man this art is pretty amateurish.... Like I get that I was crazy obsessive and had to have every picture of Death the Kid in existence regardless of how good they actually were, but damn I coulda set my standards at least a little bit higher. Pretty sure I could have drawn better things at that time in my life so I have no idea why I picked someone else's bila mpangilio deviantart piece. :I