In virtually "official" media (video games, comics, cartoons) he is not. nonetheless location does exist rafts of fan-made entirety (illustrations, comics, text stories) where Tails is so quite gay or bi. Fan works have depicted him from being in a monogamous relationship to having sex with anything with a pulse heedless of gender, age or species.
Miles "Tails" Prower (Sonic the Comic) | Sonic News Network | FANDOM powered by Wikia
Miles "Tails" Prower is a fictitious character that appears in the Sonic the Comic competition promulgated by Fleetway Editions. He is a two-tailed fox and close someone of hearable the Hedgehog. As in other than continuities, his two tails go for him to fly. tho' they are good friends, Tails is frequently the butt of inhumane jokes made by Sonic, who oft derisively calls him "pixel brain." formal wear hails from the unnamed Zone, a nonintersecting dimension inhabited by foxes (though these foxes have only one tail each) that can merely be accessed by wizard portal.
Are sonic and tails gay? | Sonic the Hedgehog Answers | FANDOM powered by Wikia
I'll let this interrogation slide, since this can sometimes be seen as a misconception to around fans of the series. But I assure you, no, Sonic and dress suit are not homosexual, they are noted many a times to be incomparable friends and see each other as brothers.