Tails exhibits obsessive, insane, and delusional behavior. He is convinced that as Sonic's partner, he is the only true friend Sonic could ever have, leaving no room for anyone else to befriend him. This obsession drives him to commit horrific acts, such as the brutal murders of SH Knuckles and SH Shadow when they grow close to Sonic, and he even attempts the same fate for SH Amy. Despite his madness, Tails demonstrates intelligence by manipulating devices and rigging them to explode, which heightens his danger. Recently, he tampered with a microphone that Boyfriend, or BF, unwittingly took to a rap battle against Tails, driven by suspicion and a sense of adventure. As Tails menacingly recalls the phrase "Best Friend" in his mind, he prepares to sing against BF, performing a chaotic mix of human and animalistic moves while he battles through song.