Zoidberg Fictional character Dr. John A. Zoidberg is a fictional character in the television series Futurama. He is a Decapodian, a crustacean-like species of alien, who works as the staff doctor for Planet Express, despite his ... Wikipedia https://en.wikipedia.org/wiki/Zoidberg

I you have seen the show, you would understand more. The way the guy is standing reminds of being crab-like. The character in the show was like this. So, for people who know the show, there was context to make it easier. It was a great show.