A subtitle-corpus transliteration of an English-speaking character's name (Mickey/Micky + Gaynor).
米基 (Mǐjī) is the standard rendering of 'Mickey' — same as
米基鼠 isn't quite Mickey Mouse (that's
米老鼠), but as a personal name
米基 is the go-to. The middle dot · separates Western given name from surname in Chinese typography.