Mirage has undergone a number of different iterations, with the character also being called Dino in some Transformers storylines. Although the character isn't as mainstream as some of the other Transformers characters, Mirage is a big part of the series, appearing in many of Transformers' most popular stories throughout comics, animation, and film.
Like many of Transformers' other main characters, Mirage is a generation 1 Autobot, with his roots being traced back to the very beginning of the franchise.