Relius Clover

Relius Clover is Carl and Ada's father.

Information
Relius created the Saya replicas, as well as Nirvana, a Nox Nyctores. His son Carl wants revenge on him for something that happened to his older sister Ada.

Trivia

 * A common fan-theory is that Relius somehow turned Ada into Nirvana. Concept sketches of Carl and Nirvana back up this theory, showing Nirvana with a (naked) human torso, however seemingly robotic arms.