OMG
Did I make this?!
This is one of my most precise artwork!
To me this looks just like Leela ^^
I got the idea of the pose from the 2nd episode when she says "If everyone's finished being stupid..."
Anyway I think I did a great job! I shall be doing more of these ^^

The original is in my scraps. I have another with Fry that I might do soon too! After I do a few requests though because I'm a bit behind

(Isn't her head a bit big???)
If I were you, I'd pull the print, simply because I really doubt you have obtained the authorization to sell them.
The character is copyrighted by FOX, and you risk being sued by them for this. Same goes for the Spyro one
Copyrights are really not that difficult, if someone else desinged it, you have to ask them for permission to use it. If you're going to use it commercially, (anything involving money) it will most likely be for a price.
But, what I son't understand is that I made the art. If I credit Matt Groening can I keep it as a print?
Second, you have to credit them just to be able to show it on this site without violating the copyright
Third, prints are sold, making profit for both you AND deviantART. This is knon as commercial use. If you make profit off someone elses design, without a PRIOR WRITTEN AUTHERIZATION, it's a clear copyrightviolation and a crime. It's not enough to credit them, you must mail them. And I promise you, neither FOX nor Matt will allow you to sell them.
In short:
You cannot sell prints of drawings containing characters YOU YOURSELF have NOT designed. Fan characters are kind of a gray area, so avoid them aswell.
Read more here
[link]
Well, thanks for the info! I'll be more careful next time!