Warstar!

A shabby industrial ship carried Xia Fei away from the Metal City, heading toward the unknown reaches of space in search of the last of the three chiefs under the Sentinel Goddess, the super combat robot Warstar.

"The last time I saw Warstar, he's cultivating at the edge of the Hidden Realm. I hope that he's still there," the robotic cockroach Dimsky said.

For some reason, this chief engineer seemed to have a grudge against his colleague. Hami had gone to great lengths to persuade him into coming with them in search of Warstar.

"Cultivate? A robot can cultivate?" Xia Fei questioned.

Dimsky nodded. "Robot warriors cultivate differently from you. They primarily research skills used in battle and how to modify themselves so that they can produce more explosive power. The toughness of critical components is also crucial."