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. Eventually Bugs shoves him and horse onto a bench seat. Bugs flew into the sky and Smith chased after him on his own airplane, until Bugs was able to destroy it. Eventually Bugs ran out of power and instead of fighting Smith he left him because he felt the job should be left to a real superman.
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.
in Villains Battles they take a similar role of the movie except they first working for Mcleach and later for Pete and Yosemite Sam