Just asking, who you think is a Minor Mario character, as in a character in the Mario Series who doesn't usually appear in Main stream games. Some come to mind as Waluigi, Princess Daisy, Toadette, and sometimes birdo. But I was just wondering who you think is a minor Mario Character.

Princess Daisy for sure, or that Pink dinosaur thing. Think it's called Birdo is it?

Mario.  Luigi is where it's at.

Everyone except Mario, Bowser, Peach, Luigi, Toad and Yoshi 
 
Maybe Wario

Lol I hate Princess Daisy.

Any character who I've killed numerous carbon copies of. i.e Goombas, Koopas, Bullet Bills, etc.

I don't really see how those can be considered Mario Characters. I'm talking about characters who aren't in Mainstream Mario Games. As for Wario possibly though he does show up in some non Spin offs from time to time (Though the last one was in 2004.)

I'm don't exactly like Bowser Jr. but he's not a minor mario character in a single bit.

Captain Falcon.  You heard me.

Princess Daisy and the creepy Birdo. 

Captain Falcon's not a Mario Character.