Born the primary heir to a violent patriarch, Alastair’s youth was defined by expectation and a frigid atmosphere. He fled into the sort of cruel amusements unsanctioned for a boy of his standing. At Hogwarts, he led the secret Valor Society: a circle of Slytherins facilitating secret duels and fights in the dungeons. This era ended in a blood-duel with a Travers boy that left Alastairs opponent permanently disabled. The gold of his father and the betrothal to their oldest daughter Dorcas Travers bought the silence of the Travers family.

After graduating from Hogwarts he balanced a "proper" marriage to Dorcas Travers with being terrifically bored and indulging in all the worst distractions. With time his tastes grew less refined. His disreputable dealings eventually grew into a rising name in the underworld. As "The Viper," Alastair established The Blackadder and dominated illegal boxing rings, securing his personal fortune through methods his father never dared. He became a man of two worlds.

His increasingly unstable wife Dorcas died under suspicious circumstances while under the stewardship of his father Bartholomew. The death of his wife and the discovery of his brother Zephyrus’s betrayal brought Alastair home to the manor. He beat and banished the brother, but inherited a crisis: the children born to Beatrice are illegitimate threats to his claim. Now, Alastair seeks a new wife and a true male heir to secure his inheritance of the Rosier name.

"We want the whole world or nothing."