Swamp Gators are minor antagonists in The Princess and the Frog.
Ian was voiced by Kevin Michael Richardson and Marlon was voiced by Emeril Lagasse.
They find both Tiana and Prince Naveen as Frogs and attempt to eat them, almost eating Prince Naveen; they would've if Tiana hadn't helped him. They are not seen in the rest of the film.
They have wild, impatient, and hot-tempered personalities.