• Tailsko Doll: Tails Doll is a mere stuffed animal in design. It greatly resembles Tails, sharing the same head bangs, twin-tails, and it even features orange and white stitching similar to the fox's fur. It has red feet with a white stripe over each foot, similar to Sonic's shoes. It also has a gray zipper leading from the back of its head to its lower back. Additionally, Tails Doll has a metal antenna protruding from the top of its head with a red orb at the end, which serves as its power source.

This version of Tails Doll, Tailsko Doll, is more feminine in design, being taller than its organic counterpart, Tails and is sadistic, playful, seductive, and mainly opposite to her organic counterpart's personality. Tailsko Doll has a rare cuddly and clingy side, she won't be clingly in a possessive way, but she'll literally cling onto the person she likes. Tailsko Doll also has hidden razor-sharp teeth.

• Organic counterpart: Miles Prower, better known as Tails, is an anthropomorphic fox cub with two tails. He possesses mostly amber fur with white countershading around his muzzle with cheek tufts, belly and the tips of his tails. He also has large triangular ears with white canals on top of his head, a small black nose and three locks of hair on his forehead. For attire, he wears cuffed white gloves, white socks and red shoes with white tips.

Tails can be described as a gentle, sweet, kind and loyal fox with a good and positive attitude. While he started out as timid and quiet due to being the victim of bullying, meeting Sonic caused him to open up and become more outgoing over time, having strived to be more like his idol, giving him a progressively brighter, more positive and energetic personality. Tails is not one to grasp the spotlight for himself. Instead, he is always ready and willing to help others without asking for anything in return.

Unlike Sonic, who is constantly hyperactive, Tails is somewhat calmer and more controlled. He has a passion for mechanics, and he finds himself most at home in his workshop working on his next creation. Despite his great skills, he is very humble about his abilities and has not realized how useful his scientific skills are yet. Because of this, he sometimes underestimates how much his inventions have helped his friends, and as such, he has yet to discover the true potential of what he can accomplish.

Due to having hung out with Sonic for so long, the fox has become somewhat smug like his best friend over time; by the time of the Lost Hex incident, he had become more confident and outspoken about his intelligence, engaging in more friendly banter with Sonic and mentioning his previous accomplishments more frequently. In contrast, he has been known to insult Dr. Eggman and his creations.

Despite his development, Tails can still be timid and withdrawn at times and can sometimes sink into self-doubt and insecurity, especially when his creations are insulted or when he feels left aside in favor of others. The status quo of his relationship with Sonic, created from the hedgehog's authority over him, initially placed a mental stranglehold on Tails that made him dependent on Sonic. As such, he often lacked initiative and confidence when alone. However, a turning point for Tails came during the Chaos incident; when Station Square was in danger of being destroyed, and with Sonic nowhere to be found, Tails realized that he could not depend on Sonic forever and had to try on his own. After saving Station Square, Tails realized he could be independent and support himself without Sonic, and all he needed was determination and faith. Since then, Tails has become more independent, self-confident, motivated and brave, rising up to be a real hero when needed.

Despite his insecurity in times of weakness, Tails is always willing to support his friends with a clear mind. He constantly tries his hardest to help in some way, typically by making machines or other devices. Additionally, he hopes to one day be self-sufficient and independent like Sonic to prove he can be relied upon. Also, even though Tails still enjoys being Sonic's sidekick, he believes that he can do almost anything if he puts his mind to it.

During their earlier adventures together, Tails strove to become just like Sonic by replicating the mannerisms he found admirable. In this period, Tails was content with being Sonic's sidekick as he was just happy to hang out with Sonic. As Tails grew as a person, he would still remain as close to Sonic as ever and look up to him as he has always done, but his esteem about Sonic's heroics have dwindled, as these days he cares more about inventing than Sonic's heroic deeds.

Despite his intelligence and general fearlessness, Tails can be naive and big-mouthed, such as during the Space Colony ARK incident, when he accidentally confirmed Eggman's suspicions that the Chaos Emerald that Sonic had was a fake, thus ruining the heroes' plans. He has a tendency to talk technobabble, much to the irritation of his friends, showing that he does not always use tact in a situational matter. Nevertheless, Tails is supportive of his friends, willing to be by their side no matter how dangerous the situation might be, and will do whatever it takes to help them, even if it means sacrificing himself for them.

He has a pure and courageous heart. Although he has been persecuted in the past for his dissimilarities, Tails would over time find the right friends to give him support, which in turn gave him confidence. Loyal and trustworthy, he can be counted on to stand firmly by the side of his friends and help them out however he can. While still young, Tails has time and again proven himself to be a force to be reckoned with despite his inconspicuous appearance, especially with his high intellect. As a result of being practically raised by Sonic though, Tails has been known to carry out his plans without warning or a heads-up. Despite this, he still uses his abilities and talents to carefully prepare himself and his friends for various situations if he is not entirely sure about what they will be facing. He is likewise very friendly and tries his best to approach others with a kind-hearted attitude, even towards enemies whom he does not know very well.

Tails often tries to stay optimistic. However, he is very sensitive, and when severely stressed out or under intense pressure, Tails can become quite nervous and fearful, which renders him unable to properly cope or do anything about the situation at hand. However, even in the worst of situations, he does not give up and shows a strong will to survive.

Much like Dr. Eggman, Tails has an affinity for personalizing his belongings in his likeness, with his house in Emerald Town resembling his head, and the Miles Electric being named after himself.