If there is, it's going to be a Japanese exclusive joke, because obviously the English VA's for both are different.
What I really want to know is how Metal Face is going to react to Mecha-Fiora fighting him(if it happens) outside the Face Nemesis. Honestly, Xenoblade kinda skimmed over the Metal Face-Fiora "chemistry", so to speak, since all we ever see between the two is Metal Face killing Fiora and Metal Face using Mecha-Fiora as leverage against Shulk and co. Did he know from the beginning that she was converted? Was he ever resentful of operating under her at times(like Prison Island)? Maybe he wanted to kill her too even before the plot twist when he reveals himself? I, for one, would enjoy the answers.