So clearly, because they're reploids, most Mavericks are based on X
Transcript:
"X" was created by Dr. Thomas Light. He was a new type of robot with the ability to think, feel, and make his own decisions. Recognizing the potential danger of this model (in particular if he were to break the first rule of robotics: a robot must never harm a human being), Light sealed X away in a diagnostic capsule for over 30 years of testing.[3] X's capsule was uncovered by an archaeologist named Dr. Cain almost 100 years after X's creation. Excited by the possibilities X presented, Cain disregarded the warnings Light had logged in the capsule and created a legion of robots that replicated X's free will; these robots were called "Reploids" (shortened from Replica Android, but known as "Repliroids" in Japan).
A number of Reploids turned against humans. These Reploids were dubbed "Mavericks" ("Irregulars" in Japan), and a force called the Maverick Hunters ("Irregular Hunters") was formed to combat them. The Maverick Hunters were led by Sigma until he, too, became a Maverick and declared war against the humans, thus starting the Maverick War. X took it upon himself to join the Maverick Hunters under their new leader Zero. Throughout the series, X and Zero battle against the Mavericks to stop their plots to destroy the human race.
