Is Tails related to Sonic just like Luigi is related to Mario?

Answer 1

Favourite answer

no they vary nice friends Tails, is a two-tailed fox who is Sonic's best friend and sidekick.https://en.wikipedia.org/wiki/List_of_Sonic_the_He...

Answer 2

I'm not that knowledgeable about the sonic lore but I think they're just two animals who gained human like qualities through eggs robotification process and met and became friends