Croesus

Croesus is a Voxai who was a resident of Colony Beta during the Overmind's tyranny. Croseus and his family became unwitting outerminds, thanks to a clandestine Nocturnus operation, using a machine that blocks the Overmind's telepathic signal. Being cut off from the other Voxai was driving Croesus mad; but when the machine was shut down by Tails, he was able to hear again.

Etymology
Croesus was a king of Lydia in Ancient Greece, who was renowned for his great wealth.