It's quite simple, really; just make stuff up!
Homo Sapien, ex. Mario, Princess Peach. goes without saying.
Koopus Troopus, ex. Kooper, Koops
Koopus Paratroopus, ex. Parakarry
Koopus Monstrous, Bowser
Yoshus Awesomus, Yoshi
Shyus Guyus
Recurricus Unwantus: Petey Piranha
Charactus Non-canonicus, Plum