Smash DLC throughout history:

: The most iconic legendary Pokemon, also a veteran

: Protagonist, also a veteran

: Protagonist, also a veteran

: Protagonist from a new franchise

: Protagonist from a new franchise

: Protagonist from an existing franchise in Smash

: Protagonist from a new franchise

: An odd-ball generic enemy character (likely intended for the base game)

: Protagonist from a new franchise

: Protagonist from a new franchise

: Protagonists from a new franchise

: Protagonist from a new franchise who also represents a new company content-wise

: Protagonist from an existing franchise in Smash
Just something interesting to notice. That being said, I wouldn't be that surprised if we get more "side characters" from represented franchises.