https://www.gamespot.com/articles/super-smash-bros-ultimate-gets-chrom-and-dark-samu/1100-6461022/

Nintendo's Super Smash Bros. Ultimate Direct delivered a ton of new details about the upcoming fighting game, kicking off with the announcement of Simon and Richter Belmont as playable characters. Those weren't the only new fighters introduced during the broadcast, however; Nintendo also revealed that Fire Emblem Awakening's Chrom and Metroid Prime 3's Dark Samus are joining the roster.

Like Princess Daisy and Richter Belmont, both Chrom and Dark Samus are Echo Fighters--clones of other characters already on the roster with a different appearance and slightly tweaked abilities and moves. Chrom is based on Roy, while Dark Samus is, naturally, an Echo of Samus.