They join actor/director Quentin Tarantino as the Krewe of Orpheus' 2014 celebrity monarchs.
Schneider is known for his role on "Dukes of Hazzard" and currently stars in OWN Network's "The Haves and The Have Nots."
Roday is star of USA Networks' "Psyche." Joining him on his float will be his "Psyche" co-star, Jimmi Simpson.
Tarantino will lead the 27-float procession, themed "The Enchanted World," on Lundi Gras—Monday, March 3—on the eve of Mardi Gras.
The parade's more than 1,300-member krewe also will pay tribute to legendary singer Fats Domino, who will serve as the krewe's honorary grand marshal. Domino's son, Antoine Domino Jr., will play his father's music live on a special piano-equipped float. The Dixie Cups also will be recognize on the krewe's famous Dolly Trolley and Orpheus 2014 Musical Legend, Coco Robichaux, will be represented on its doubloons.
Orpheus, one of the city's super krewes, was founded in 1993 by Sonny Borey, the krewe's captain, and singer Harry Connick Jr.