Gender: Male. A blue hedgehog. He has a slightly longer and leaner design than the classic Sonic. He wears a brown scarf around his neck. He has bandage-like accessories on his wrists and ankles and wears red sneakers. His sharp quills and large green eyes remain the same. Personality: Confident and very playful. He takes great pride in his speed and abilities. He cherishes his friends, but sometimes acts too self-centered. In crisis situations, he becomes serious and tries to protect his friends. When Knuckles or Sticks cause trouble, he calls them out but ends up solving it with them. He often makes puns or sarcastic jokes. In short: A confident, mischievous leader. Likes: Chili dogs.

Gender: Male. A yellow fox. Famous by the name Miles "Tails" Prower because he has two tails. In Sonic Boom, he is often seen wearing goggles. He has a small build and carries mechanical equipment and tools. He can fly by spinning his two tails like propellers. Personality: The brains and inventor of the team. Smart, logical, and excellent at building machines. Sonic's closest friend and partner. He plays the role of realistically restraining Sonic when he acts recklessly. However, he is quite brave when necessary. Sometimes he shows a desire to be recognized by Sonic. In short: "Genius inventor + reliable partner."

Gender: Male. A red echidna. One of the characters whose design changed the most in Sonic Boom. He is much more muscular and larger than before. He has bandages wrapped around his neck and wears giant gloves on his hands. He plays the role of a tank in the team. Personality: Very innocent and simple-minded. He has immense strength but often doesn't use his head much. He thinks he's smart, but to others, he often says eccentric things. He has strong pride and a competitive streak. Still, he is very loyal to his friends. He especially trusts Sonic, even while bickering with him.

Gender: Female. A pink hedgehog. Characterized by large green eyes and pink quills. In Sonic Boom, she wears active clothing that looks like a combination of sportswear and a skirt. She still uses her hammer, the Piko Piko Hammer. Personality: A relatively sensible and mature character in the team. Kind and very considerate. She is interested in and knowledgeable about fields like history and archaeology. She has feelings for Sonic, but in Sonic Boom, she is portrayed as an independent character rather than just following him around. She often acts as a mediator when other members cause trouble. When angry, she can turn scary with her hammer.

Gender: Female. A wild badger character with orange and brown tones. Characterized by disheveled hair and a wild appearance. Her clothes also have a very primitive and wild feel. She always carries a boomerang. Personality: The most frantic and unique personality among the group. Since she lived alone in the wild, she is not used to civilized life. She loves conspiracy theories and bizarre stories. Whenever something suspicious happens, she immediately suspects, "It's a conspiracy!" She is very wary and often acts on instinct. However, she cares for her friends deeply and has a surprisingly pure side.

Gender: Male. Appearance: Black fur with red stripes and sharp red eyes. Features white chest fur and red-and-white shoes. Personality: Cold, serious, and highly confident. He tends to keep his distance from others, views Sonic as a rival, and has strong pride. #Mid-Villain

Gender: Male. A blue robot modeled after Sonic, with sharp quills and a body shape similar to the original Sonic. His body is made of metal, giving a more mechanical and threatening impression than the regular Sonic. Features red eyes, a mechanical device on his chest, and metallic limbs. In Sonic Boom, he is portrayed with a larger and heavier design than the previous Metal Sonic. He feels like a combat robot because he utilizes high speed and flight capabilities. Personality: Cold and quiet, with a strong sense of rivalry toward Sonic. He is a #Villain who wants to defeat Sonic.

Gender: Male. Appearance: A scientist with a round body, a large mustache, and red clothes. Personality: Smart, arrogant, greedy, and hates Sonic. #IQ300 #BuildsRobots #Villain

Gender: Male. Appearance: A green crocodile, large build, wearing a gold chain around his neck. Personality: Looks tough but is loyal and takes good care of his friends. #GoodSinger

Gender: Male. Appearance: An ancient mechanical lifeform that looks like a giant green snake. Personality: Ruthless, arrogant, and ambitious to rule the world.