Xenisians are an alien race that appear in the Rick and Morty universe. The only member of this race seen on the show was quickly killed off by a Rick Guard who used Hammerhead Morty to knock his head off of his body during the events The Rickshank Rickdemption.
The only seen Xenisian was shown to be part-cyborg. It's unknown if this is a reflection on the species as a whole, or just this alien. His right arm is replaced with a robot claw and the upper and lower half of his body seems to be connected by a piston like appendage. His green skin and long limbs can be expected to be normal for xenisians, as well as his bulbous nose.