This is Benemal! He's an alien boi from another dimension, he has no leggies since he's sort of a slug mantis thing.
His design has a couple direct inspiration, the first being the sligs from oddworld, thus the robo legs, and the aliens from that one episode of Dexter's laboratory! which is why he's mantis-like and has that breathing mask.

There's more details I would like to share about him, but the details would be better on a mature post related to said details, and it involves that mask.
Might draw something for that in the future!