Sankaku Channel/

Tallcat said:
Not really. Marth (not Lucy) in FE:A was the real Marth. As with the other DLC characters from the previous games. Whether they're a magic clone or whatever dumb reason they had to exist, they weren't a unique incarnation of the character. They were literally the same person with a new design from kozaki_yusuke

...I pretty much already said that, in my opinion, characters who were made specifically for a version regardless of their previous incarnations should be treated as separate characters. Most consider the separate Zeldas as different princesses--as one ought to, given their individual personalities in addition to their appearances--and it remains that there isn't a universal tag for this case. However, there are no Sonic tags for his separate incarnations because of universal association, even when comparing the classic to the modern.

Once again, it is a instance-based decision when judging both repeated presence and incarnation as can be seen. If the original poster gave the name of the exact character, perhaps it can be whittled down further--most Fire Emblem characters go without proper tagging because many of the games do not have names bearing a English-counterpart... And because some taggers are rather lazy.