Pretty Soldier Sailor Moon

[Vaati]

very weird, Wikipedia ignores their Americanized names (or I'm blind):
http://en.wikipedia.org/wiki/Sailor_Moon

Does this mean they are US-only and every other country used the original names (like Germany)?

The North American version changed the names of some characters but left some the same. I'm not sure about other versions though but some of them used translated versions like instead of using "Usagi" they used the meaning of Usagi which is "Bunny".