Almost every series could expand on characters.
MARIO
Rosalina-FS: Luma attack
Daisy FS: Daisy Flower
Geno FS: Geno Beam
King Boo FS: Ghost Summon
Bowser Jr. FS: Shadow Mario
DK
King K. Rool FS: ?
ZELDA
Midna FS: Mirror of Twilight
Skull Kid FS: Moon
Toon Zelda/Tetra FS: Pirate Ship
Young Link...