

Slaine discovered he could activate Aldnoah Drives and activated the mecha Tharsis, formerly belonging to Cruhteo, and engaged in combat with Inaho until Asseylum deactivated the Aldnoah Drive, and all Vers Kataphrakts. Slaine remained in Saazbaum's Landing Castle until it was attacked by the United Forces of Earth. After the Orbital Knights were reassured of his loyalty, they began to tend to his injuries when the base was attacked by Count Saazbaum, who had masterminded the plot to assassinate Princess Asseylum. Recaptured by the Orbital Knights, Slaine was beaten, but did not reveal anything. However, Inaho later shot him down, fearing Slaine might have been an assassin. Assisting with Inaho's fight against the Kataphrakt, they were able to defeat it with their combined skills. After locating the mecha, he shot down a missile from the enemy Martian Kataphrakt- actually the Kataphrakt's rocket-powered, monomolecular armor fist. Stealing an aircraft, he flew towards Earth where it was last sighted. Because he was born on Earth, he faces a lot of discrimination from the people of Mars.Īfter finding out Princess Asseylum was alive, he tracked her down using his only lead, an orange KG-6 Sleipnir, which was piloted by Kaizuka Inaho. He and his father were rescued by the royal family, having to work under them, he slowly developed a strong bond with the Princess. His father was a scientist sent to study the ALDNOAH drives.

(ALDNOAH.ZERO: "Beyond the Horizon") He is later shown to possess the power to activate an Aldnoah Drive and to be a skilled pilot of the mecha Tharsis. Slaine is shown to be a capable aircraft pilot able to handle fast and tricky maneuvers. His loyalty to the princess can be further attested by the fact that even when he was being tortured, he would still not reveal that Asseylum was alive. When presented with the possibility of her being alive, he boldly went after her alone. Slaine is shown to be very friendly with Princess Asseylum, being completely loyal to her.

He wears the uniform of the Mars Orbital Knights.
