Wilburforce was partially inspired by the Japanese cartoon series "Paranoia Agent", which has in it a pink dog with no nose. He was also partially inspired by Owlguin Takanawa, a cartoonist who enjoys mixing extreme yin with extreme yang.
Wilburforce is a pudgy cartoon dog of indeterminate breed. He has floppy ears, oversized eyes and no nose, and his fur is solid pink. He wears only a collar with a round tag which we may presume bears his name.
Consistent with his appearance, Wilburforce approaches other characters with a child-like enthusiasm and a penchant for affected speech and physical affection; but he reveals just as quickly that he enjoys contemplating the melancholy and macabre, even going as far as to imply he enjoys physical pain. No one else quite knows what to think about him, and he does not seem to care.