User blog comment:Plasmaster/How Could They Do This!?/@comment-26820710-20151021235904

Well, considering many representatives of many of the series introduced in Sm4sh (Mario series, TLoZ series, Fire Emblem series, etc.), I guess a character from Xenoblade X could be added (either as a fighter or DLC costume) to have another Xenoblade character to represent the Xenoblade series with Shulk.