Sebastiano Biancastro is the son of Fausto Biancastro. His father took poorly to foreigners laying hands on his wife (read: saving her from drowning) during the adventure of The Arrow of Heaven. Lucas and Miranda killed Fausto and his cousins by defending themselves with excessive force. Since then, Sebastiano has a blood feud with Lucas.
He gained the right to add "Villanova" to his name when he became a retainer and armsman of Prince Giovanni Villanova. The heroes first met him at a royal ball in San Cristobal, then he lent his assistance to Constanza when she captured a Crimson Rogers ship with a cargo bound for Caligari Island in Corantine 1668. Melisandre and him have been exchanging love letters.
Most recently, the heroes met him again in Dionna when he helped them free Doņa Lucia. He then had to flee with them along with his stepmother, Lucretta Biancastro, to Castille.
