Miles Tails Prower, Pure Good Wiki

Miles "Tails" Prower, better known as Tails, is the deuteragonist of Sonic the Hedgehog video game franchise. He is Sonic's best friend and sidekick (as well as his adoptive brother). While it is arguable as to who had more of a heroic level of actions between him and Sonic, the one important difference as to why Tails has been categorized to be such a good-hearted person is because of how he has shown to have no corrupting aspects that don't come across as even remotely selfish within not only

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How powerful is Sonic the hedgehog without the chaos emeralds? - Quora

Miles Tails Prower, Pure Good Wiki

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Found this when I was looking for tails : r/SonicTheHedgehog