Cottontail Smith is a hunter from Texas who planned to hunt down every rabbit on the planet. Riding on a horse he had a run in with Super-Rabbit and attempted to fire him, but the bullets prove useless.
Nasty Canasta is a character in the Merrie Melodies and Looney Tunes series Nasty Canasta is depicted as a tough, hulking, and brutish-looking outlaw and is normally more intimidating than other typical villains.
and they both appears in Looney Tunes: Back in Action they working for Yosemite Sam as his henchman to obtain the map to the Blue Monkey Diamond from DJ Drake and Daffy Duck. They play the same role like in the movie in many villains tournaments.