Zoidberg is, in my opinion, by far the funniest character on Futurama. Right from his introduction in 'The Series Has Landed' you could tell he was special. He may be hideous, poor, and a terrible doctor, but the show just wouldn't be the same without him. His crowning moment has to be his performance in the classic episode 'Why Must I Be a Crustacean In Love?', where he went to his home planet to find a mate.

History:
Zoidberg was brought up on Decapod 10 amongst his own species. As a larva, he was bullied by the other crustaceans at his scuttling grounds. He came to Earth at some point and became a surgeon, and was hired by planet express. As far as I can tell, he does not actually have an MD. Zoidberg's species meet occasionally for a mating frenzy, where everyone looks for a mate with lots of eggs or male jelly. After mating, everyone dies. Zoidberg, being an inferior male specimen, missed the frenzy.

Fantasy:
To know what it is like to be a grandmother - subjugated yet honoured.

Likes:
Fellow crustacean Edna (deceased), anyone being friendly to him, Bender.

Dislikes:
People disparaging his ability as a doctor.

Other Information:
Zoidberg is the only known person to be judged 'nice' by Robot Santa, he is a member of a third party, his species wiped out the anchovy, he was once booed off stage at the apollo theater.

Zoidberg Quotes

Leela: Bender! Love isn't about money!
Bender:What? So it's just a coincidence that Zoidberg here's both desperately poor and miserably lonely? Per-lease.
Leela: For your information, it's because he's hideous.

"She's a hateful monster this Morgan! She scolded and hit me! I'm telling you she's risking my friendship with her!"

Zoidberg: I'll have a look but I warn you, I'm an expert on humans, not robuhts.
Fry: Er, I'm not Bender, I'm Fry.
Zoidberg: Really? I thought you were the robuht.
Fry: Nope, human.
Zoidberg: Alright, alright, spare me your life story.

(Bender, Fry and Leela have all been fired)
Zoidberg: Bah! Good riddance to them! Now Zoidberg is the popular one!
Farnsworth: Yes, yes, let's all talk to Zoidberg!
(They all start talking to him)
Zoidberg: Oh, well, you know...

"Friends! Help! A Guinea pig tricked me!"
-After getting lured into a trap with a Guinea pig as bait

Zoidberg: What are you moaning about? Just get on your claws and do the apology dance! (Starts doing a weird dance) Yadadadadadadadadada...
Fry: So it's left, left... wait! I've got a better idea!