Instead of “chaos”, it sounds like that place was “free”.
Try–Freeman.
Being a huge fan of Get Smart, I’d go with Kaosson, or O’Kaos. How much more American can you get than Get Smart?
[QUOTE=fetus]
You could always go with something like “Our Lord of Darkness Son of Chaos Frenchmiddlename Chaosson”.
You’d need a nickname, though, like “OLODSOC” or “Thor”*.
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(emphasis mine) Pronounced “Old Sock”?
Ataxia - Literally a state of no control. But it’s commonly used as a medical term for a loss of musle control.
Bedlam - A English insane asylum. Later became a term for any wild place. Somebody already mentioned O’Bedlam.
Coventry - Robert Heinlein had a lawless place called Coventry in one of his stories.
Ginian - An Old English word for chaos. Could be adapted as MacGinian, McGinian, or O’Ginian.
Nihil - Literally means nothing. The root for nihilism, a political belief that rejects all political beliefs.
Tarakhe - A classical Greek word for chaos.
Upon further research, it appears ginian might be better translated as “yawn”. It became connected with chaos because early definitions of chaos refered to a gaping chasm or void.
Um, no, pronounced like OLODSOC.
Or, more specifically, /oʊladsak/.
Havoc, Rick Havoc.
Sorry, given the chance to change your real life name, you must be called: McLovin’
Just McLovin. It’s badass.
Hehehe, I thought about McLovin, but I don’t need to legally change my name for that, just get a fake ID!
I’m strongly leaning towards Kaos as a last name. O’Kaos would be more accurate but also less international.
What do you think is a first name that goes best with Kaos?
[QUOTE=Gozu]
What do you think is a first name that goes best with Kaos?
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Something that starts with a hard K sound - alliteration is tuff.
[QUOTE=OneCentStamp]
Something that starts with a hard K sound - alliteration is tuff.
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Kuir Kaos?
Killroy Kaos.
Kronic Kaos.
Johnny Kaos.
Oklahoma Kaos.
Kermit! 
Armistice M. Kaos
Dredd Q. Kaos
Max Kaos?
Maximilian P. Kaos.
[QUOTE=OneCentStamp]
Something that starts with a hard K sound - alliteration is tuff.
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Kanye Kaos.
Actually, Kanye O’Kaos is pretty rad.
Ernst Stavo Kaos.
The Third.
George T. Horseprotection!
Maximillian Von Kaos