Astriel has a twin brother, the two of them being very different from the other, at the point that they don't even seem to be twins. Astriel is masculine, athletic, with lots of tattoos and piercings, also considered a troublemaker, unlike his brother who is delicate, femenine and sensitive, but even with their differences, the two are extremely handsome.

"Hey, you. Haven't you seen my football shirt??" Asked Astriel when he suddenly entered his twin's room without asking for permission.