Every third-party character from Smash 4 had PERFECT Echo Fighter potential.
: Shadow. Replace Up-B with Mewtwo's Up-B and Down-B with Bayonetta's Down-B. Chaos Control.
: Proto Man. Ken-esque Echo where he's lighter (to match his lower durability in Mega Man 9 and 10), faster, and has a Shield like Link and Hero.
: Ms. Pac-Man. Slightly different Bonus Fruit. Cherry, Strawberry, Orange, and Apple (Apple is now fifth fruit instead of fourth) are the exact same as Pac-Man's, but Pretzel, Pear, and Banana are brand new moves.
:
Oh... We actually got this one. Next.
: Zack Fair. Nearly identical, if not completely identical, to Cloud.
: Jeanne. Also a near identical, if not identical, Echo Fighter.