Koopa (species) - Super Mario Wiki, the Mario encyclopedia

Koopas are a category of turtle-like creatures that form the Turtle Tribe. There are many different types of Koopas, the most common being Koopa Troopas; they are specifically named for the species

Koopa Troopa, Video Games Fanon Wiki

Koopas, The Official Mario Wiki

Princess Peach, MarioWiki

Wendy O. Koopa, 8 Bit Book Club Wiki

Koopa Kid - Super Mario Wiki, the Mario encyclopedia

Koopa Clown Car, MarioWiki

Roy Koopa - Super Mario Wiki, the Mario encyclopedia

Morton Koopa Jr. - Super Mario Wiki, the Mario encyclopedia

Morton Koopa Jr., Nintendo

Lemmy Koopa, MarioWiki

Mario - Wikipedia