Aristo

Aristo is a resident of Soleanna in Sonic the Hedgehog (2006). He is an intelligent young scientist from Castle Town who is training to become a top mathematician. Due to his mathematical intellect, he was named after the Greek philosopher, Aristotle. He is evidently very smart, as he has challenged many people to intellectual battles, and no one has proved able to beat him.

In Sonic's story, Aristo gives Sonic his fifteenth Town Mission. Aristo decides to test his estimation skills in a series of five questions. In each question, Sonic must correctly guess how many crates are in a stack.