Professor Curio is a well respected and elderly gentlemen who lives in Cappy Town. Curio runs an antique shop/museum where he displays his artifacts of ancient Dream Land and a long lost Cappy civilization. Besides collecting ancient artifacts, Curio also finds solace by learning about the past in his free time as well. His museum is often vandalized by resident Cappies, so he often has to spend hours sprucing it up. He enjoys working to piece together the past, however hard it may be. Because his museum is underfunded and not all too popular with the town's citizens (except of course for Tiff) he often tries to spark the Cappies interest in history and drum up popularity for his museum such as placing fake artifacts in the ground to prove that the Dedede clan have been around for generations, among various other schemes.
Curio's name comes from the Latin root meaning "inquisitiveness," referring to the professor's curious nature; more specifically, it may come from the word curio, a rare and intriguing item, referring to Curio's interest in archaeological artifacts.
Curio happens to be materialistic, concerning anything that's valuable.
It is also known that he would do anything for money, which is why he's willing to make a deal with King Dedede in Curio's Curious Discovery.