I've been saying this from day 1, Geralt is a character that makes actual sense to include as a guest, not some generic nobody sword dude from some dumb One Piece anime, which other Era users argued with me against.
Geralt for X1, Ciri for PS4, Triss for PC would be awesome lol
But Zoro is cool. :(
Also he isn't a nobody, One Piece is basically the best selling manga of all time, so that's a bit of stretch. Though I agree with you that the pick seemed out of place to me initially, even as a gigantic fan of the series. I really doubt there is anyway that would happen.