Yes.
No, PS2 games will only work in PS2s and Older PS3s.
You can play CDs from Europe in a US player and CDs from the US in a Europe player. It's DVDs that don't work due to region codes.
Theoretically it would work if you had the right power cable, because the plugs are different in Europe, or you could buy an adapter for the plug to make it American, as far as discs they should work, just don't try putting dvds from Europe in it.
It will work in most countries in Europe. However, it will not work in the United States because the US uses different frequencies from Europe.
the figureines are not country specific
yes
Of course they worked together.
No
Yes it does work. I seen people played from Japan and Thailand.
Probably not w/o an adaptor. The voltage in the outlets are different in the US and Europe. The frequency is different too but usually that's not critical.
They'll work fine on a US AR, just as long as the game itself is from Europe.