What characters do you want to see playable more in spin-offs?

Nysic

Power Star
Not necessarily just characters that have never appeared, but any character that may have only been playable once or twice that you want to see playable more.

In general, I think the spin-offs should have much larger rosters (like, Super Sluggers size), but I especially want to see more enemies like Goomba, Hammer Bro (and variations), Blooper, Boo, Monty Mole, Spike, and such. Petey too, of course.

Also, King Bob-omb. Why hasn't he been playable yet?
 
Lanky, Wrinkly, Tiny and Chunky Kong. I'd also like Octoomba, Whomp, Thwomp, Lubba and King Bob-Omb
 
inb64 my sister comes and says/implies Baby Luigi or Baby Mario.

I like to see Wiggler, Fly Guy, Dry Bones, Pianta, TOADSWORTH, H. Queen, and E. Gadd appear playable in more spinoffs though.
 
Striker Mario said:
inb64 my sister comes and says/implies Baby Luigi or Baby Mario.

They seriously need to be spin-off regulars
 
E.Gadd.
 
I liked him in Mario Party games and i liked his quotes.
 
Dry Bones, Dry Bowser, King Boo/Boo, Toadette, Birdo, Bowser Jr., Diddy Kong and maybe Petey Piranha are the more obscure ones that I hope would just become regulars so that the games are more interesting for others.

Otherwise personally Shadow Mario. He was cool in Mario Golf: Toadstool Tour, especially since he was like a combination of Luigi's swing and Mario's power, as well as actually being Bowser Jr.
 
I keep slipping up and calling Shadow Mario "Metal Mario".

They're just very similar characters. Both are forms of Mario that are monochromatic and shiny and have different eyes than regular Mario.