Sonic the Hedgehog is genuinely an Air Nomad, straight out of Avatar.
>"The Air Nomads detached themselves from worldly concerns and found peace and freedom."

He is a wanderer who travels around the world. He doesn't even see Tails or Amy on a regular basis until they happen to find him or run into him. He doesn't simply crash at Tails' place or rely on Tails for financial support, in the first place.

>>535490476
Play the games. Two facts about Sonic is that he has no job, and money has never been an issue for Sonic. Team Chaotix are defined by their struggles to pay rent, meanwhile the very concept has never been something Sonic has ever had to deal with in any way. Money is no object to Sonic, he's able to buy whatever he wants from any vendor in any nation in Sonic Unleashed.

You're looking at Sonic like some unfortunate homeless loser who bums off his friends, but that entire perception of yours is completely false and irreconcilable with the actual games' portrayal of Sonic the Hedgehog's character.