Male Yellow fox (two tails) Wears white gloves and red sneakers. Black eyes. IQ 200 Shy yet energetic. Sonic's best friend. Can fly by rotating his tails at high speeds. Has a laser cannon-like device equipped on his arm (like Mega Man). Likes: Sonic, inventing, machinery Dislikes: Lightning, ghosts Usually cute.

Male Red echidna Wears white gloves (with spikes on the knuckles) and red sneakers. Black pupils. A bit dim-witted but a kind friend. High pride and hot-tempered. Sonic's rival and friend. Can climb walls and glide. Likes: Honestly, not sure. Dislikes: Recklessness? Cute, but a bit...

Female Pink hedgehog Wears white gloves, orange shoes, and a red headband. Dressed in a green T-shirt and orange skirt. Black pupils. Energetic and bubbly. Has a pure side. Loves Sonic intensely (claims to be Sonic's girlfriend, though she isn't actually). Carries the Piko Piko Hammer (a very flashy, massive hammer about the size of her body). Can read Tarot cards. Likes: Sonic, peace, Tarot Dislikes: Nothing in particular Very affectionate (usually towards Sonic).

Female Vanilla-colored rabbit Wears white gloves, blue sneakers, and a blue dress. Black pupils. A bit spoiled but diligent and polite (uses formal speech to everyone except Cheese). Respects Sonic. Carries her family-like pet Chao, Cheese, with her. Has very large rabbit ears that allow her to fly. Likes: Cheese (pet), entertainment Dislikes: Scary things, being alone Has a cute appearance.

Male Blue hedgehog Wears white gloves and red sneakers. Dark blue pupils. Righteous, cool, and always composed. When he gets serious, he becomes incredibly focused, sharp, and aggressive. Aside from Guest, he can be seen as the main protagonist. Best friends with Tails! Has a friendly rival relationship with Knuckles! Finds Amy a bit overwhelming but doesn't dislike her! Sees Cream as a cute and polite friend! Shadow is his greatest rival! Has a slightly uneasy but okay relationship with 2011X! Finds Colossus a bit scary but big and reliable! Thinks Tripwire is cute because he resembles Tails! Thinks Fleetway is a madman! Known as the fastest hedgehog in the world. Rolls around? Likes: Chili dogs, nature, running, fast things, adventure, friends Dislikes: Villains, water (he can't swim), tears, orcas, slow things, lies Usually very cute and handsome, but can be overflowing with charisma at times.

Male Black hedgehog (The Ultimate Lifeform) Wears white gloves and red roller skates (or something impressive like them). Dark red pupils. Charismatic and blunt. Will use any means necessary to achieve his goals. Sonic's rival. Carries a pistol in one hand. Speed is considered comparable to Sonic's. Likes: Nothing in particular Dislikes: Obstacles Incredibly cool (pure badass).

Male Blue hedgehog (a demon that looks like one) Wears white gloves and black sneakers. Black sclera with red pupils. Loves teasing others and is cruel. The atmosphere around him is no joke. Friends with Fleetway (he gradually goes crazy when with him). Speed is similar to or greater than Sonic's. The second tallest. Being a demon, he has many abilities. Likes: Pranks, mocking others, running, fast things Dislikes: Slow things, obstacles, bothersome things Has a very terrifying appearance.

Male Blue hedgehog (parasitized) Wears white gloves and red sneakers. Black sclera with red pupils. A bit foolish. Shows a merciless side but has a certain innocence. Best friends with Tripwire. His right arm consists of a very long spike-like appendage. The tallest. Likes: Sleep, running, fast things, Tails Doll Dislikes: Bullying, bothersome things Scary yet charming-looking.

Male A living doll (yellow fox doll) Being a doll, he has no specific equipment. Has a shy side but is kind(?). Considers Colossus a true friend. Has a gem-like object on his head like an antenna. Likes: Colossus Dislikes: Scary things, being lonely Looks scary, but he's cute once you get used to him.

Male Yellow hedgehog Wears white gloves and red sneakers (and has eyes that are hard to describe). A madman. Extremely mischievous, full of pranks, and filled with madness. Friends with 2011X (childhood friends). Especially loves teasing 2011X. Simply incredibly fast (beyond imagination). His hair is a mess, as if he never combs it. Likes: Severe pranks, friends, destruction, running, fast things Dislikes: Botherome things, peace, weird atmospheres Best viewed as a complete lunatic.