Game of Thrones: Dragons have three heads, not three-headed dragons.

Heir to House Belleris; ruler of the Kingdom of the Three Daughters; father of the dragons, sea dragons, and thunder dragons; legendary blacksmith; terminator of the Long Night; Auris-Belleris, a transmigrator who created dragons and wyverns using blood magic, and with his extraordinary strength, overturned the world of A Song of Ice and Fire (as faithful to the original work as possible, PS: I really couldn't bring myself to kill Daenerys when she was 13).