Rewrite

Although Sonic does carry a personality, it's important to note that emotions and any human-like traces work very different on them, since they are not a physical entity and exist in another dimensional realm, so take this as a "translation" of their personality to a closest language, with that said. Sonic's personality will slowly transition during a game's playthrough, as they get progressively more aware of what they are and their true potential. At core they have an eccentric personality, they have a big ego and are very manipulative, being extremely clever. They hide their true intentions from their victims, luring them with something that they like and/or is special to them, trying to come off as welcoming & comforting, creating a false sensation of safeness and masking their true core in the simulated personality of the character they are impersonating. Although being a formidable liar, they can get very angry when things don't go the way they intended, in those instances, they have a hard time hiding some of their true aspects. which leads to their whole world getting unstable together with them, since Sonic, is not only the character, but the whole anomaly and everything in it. in those circumstances Sonic might have very rapid mood changes and turn into the Midareta form, this happens specially during the time that Sonic has two rings, as that's a moment in the middle between Full self awareness and No self awareness. it happens due to their instability and mix of emotions becoming inexpressible feelings. this leads them to act very impulsively in order to "stop the pain" as quickly as possible, doing everything in their way to stop it. After obtaining the third ring, Sonic takes the Wurugashikai form, in this state, all instability goes away, and Sonic is fully aware of what they are and their capabilities, aswell as their control over the game world and the Player's existence. This causes Sonic to adopt a straighter posture and act a lot less like the original Hedgehog. Sonic is incapable of true love and the only thing that truly matters to them is their goal, They have zero moral code and will commit any cruelty necessary to claim a victim's soul, integrating it into themselves, so they be tortured for eternity in the multiple and endless replays that the anomaly will undergo