Louis von koopa is actually Ludwig and Ludwiga's birth father, he's look like Bowser, except his blue hair, but unlike him, he has horns. Like his son, he's cold hearted, pompous, arrogant and genius of sciences and music.
Also, he's a great teacher of Music in Beethoven kingdom in Koopatrops, also he's Bowser's friend and Lucinda's husband.
