@Curiousscarletteyes: Hm, I personally feel they sound too little alike (Eriuriasu versus Eeryushion in Japanese) for that to be on purpose, but maybe Asano did consciously pick the name to sound reminiscent of Elysium/Elysion? We do have Chronos or Kronos in No. 6 for the Greek mythology, though there's also Lost Town which is also Lost Town in Japanese, so it's - kind of a mess language wise to begin with, hohum.
Didn't Rou name Elyurias? Maybe some kind of animal then, since that's apparently his theme? XD