There are various main characters, recurring characters,
occassional characters and so a round number is often difficult to
confirm.
See the related link for a list of these characters.
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My favorite futurama character personally is dr. zoidburg
because he is different to the other characters And is very
funny
I like the Horrible Gelatilous Blob because he is weird.
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Look it up in the halopedia at halo.wikia.com. It should list
all human characters.
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I'm pretty sure there are about six futurama characters.There is
Fry,Leala,Hermes,the profeser,Bender and Dr.zoidberg.i might be
incorect so you might want to check it out on another website.
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153 regular & recurring characters & over 250 one-time
characters.