3rd Image Song: "Mr. Roboto"

Though at times, X seems to be around for comic relief, things stopped being funny for X when a bizzarre mix-up at an adoption agency landed him the role of Hildy's legal father.

Eventually, X stopped sending angry letters to the adoption agency and leaving Hildy outside and just learned to accept the strange turn of events After getting on with his life, X saw something in a dream. It was a name. His last name.

When X took on the CPU of another Reploid, a kind of "artificial bloodline" was created. Every Reploid CPU is different--even when wiped clean. The one X has within him was the CPU of a sword-weilding female Reploid called "Shhiroid". The name of the CPU's first user becomes the last name of every Reploid who posseses that CPU afterward. That is how a Reploid's "Artificial Bloodline" is formed.