Sign:
Capricorn

A Count of the Orbital Knights and the pilot of the Martian Kataphrakt, Tharsis. He is the son of Dr. Troyard, a brilliant scientist researching Aldnoah, and was launched to Mars by his father as a means to protect him. He was found by [Princess Asselyum Vers Allusia](https://anilist.co/character/88175/Asseylum-Vers-Allusia) who took him in and later on became her tutor. After several years of living on Mars, [Count Cruhteo](https://anilist.co/character/88435/Cruhteo) takes custody over Slaine.
Slaine is very friendly and loyal towards Princess Asselyum as she was the one who saved him and the first person he met on Mars. He wishes to support her in any way possible and is willing to put his own life at risk in order to protect Princess Asselyum. Towards others however, he acts coldly and does not seem to trust anyone other than the Princess, often distancing himself from both Martians and Terrans. He is always seen with a serious look on his face.
Slaine proves himself to be a very capable pilot, able to quickly maneuver around in a Kataphrakt and face Inaho by himself.
~!After finding out Princess Asseylum was alive, he tracked her down using his only lead, an orange KG-6 Sleipnir, which was piloted by Inaho. Stealing an aircraft, he flew towards Earth where it was last sighted. After locating the mecha, he deflected a missile from the enemy Martian Kataphrakt. Assisting with Inaho's fight against the Kataphrakt, they were able to defeat it with their combined skills. However, Inaho later shot him down, fearing Slaine might have been an assassin. Recaptured by the Orbital Knights, Slaine was beaten, but did not reveal anything. 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.!~
~!After Saazbaum nearly kills Asseylum, he shoots and leaves Inaho for dead, while he forgives Saazbaum and gives his full loyalty to the Martians. He eventually is knighted by Count Saazbaum and now pilots the Kataphrakt Tharsis that once belonged to Cruhteo.!~
~!Count Saazbaum eventually names Slaine as his son. Before a major battle against the Earth Federation, Slaine shot off a barrage of bullets, set to orbit around the Earth and hit Inaho's location in the future. However, he eventually used his trap on Count Saazbaum when Inaho is saved by Inko, for the reason that he has still not forgiven the count for attempting to kill the princess. Slaine thereby becomes Count Slaine Saazbaum Troyard.!~