While I'm not sure if they'll get into 9 theres always chances for future installments but some of them are likely to appear soon

Bowser Jr

Birdo

Team Chaotix

Blaze the Cat

Ulala

Black Mage (Final Fantasy I)

Terra (Final Fantasy VI)

Tifa

Lara Croft

Doomguy

Zero

Akuma

Vergil

Demitri Maximoff

Jedah Dohma

Steve (Minecraft)

Milhouse

Abe Simpson

Principal Skinner

Ned Flanders

Meg Griffin

Chris Griffin

Joe Swanson

Pump and Skid

The Girlfriend

Donkey (Shrek)

Angel Dust

Bert & Ernie

Blitzø

Rolled up Newspaper

A Pillow