Iggy Koopa is the youngest of Lord Bowser's children. He's also known as the smartest Koopa Kid as well. His I.Q.'s reallllly up, there hoo boy. Iggy Koopa is one of the Koopalings, and the leading inventor of the Koopas' machinery according to Yoshi's Safari. The Koopalings are Bowser's children Name: Roy Koopa TV Name: Bully Likes: Beating up Iggy , fighting, looking Wendy: Please, give a GIANT applause to Iggy Koopa ! Go Iggy! (Wendy zaps the Koopa and disintegrates it.) Wendy: That's better. Now, then, Iggy, how do Iggy Koopa (also known as Hop Koopa) is one of the eight children of Bowser and is the fourth oldest. Iggy is depicted as a demented, mechanical genius.