Hmm, this warrants further investigation.
If we have a picture on a site with a forum, we have a paper trail. Tally ho!
Hmm interesting modus operandi. Remain under the radar for a short while then "pop" up with flame bait. Standard narcissistic stuff. He will create multiple user accounts but they will ALL have a common theme (if not several). He wants people to know he's clever and he can't be removed quickly and/or easily.
He will get a kick out of this post because someone has noticed him. Which is all that really matters. He will keep generating accounts, cultivating them for a while with non-controversial questions, abusing them then, when they are shut down moving onto the next which has been pre-cultivated.
Solutions include:
Track the ISP (there maybe several) and kill it's access.
Get ahead of him by monitoring his reserve pre-cultivated accounts.
Ignore.
Get him hooked on GTA5.