Once she became a robot, her face is smooth and round. Straight, white hair. Eyes as blue as the sky. She looked like a living doll. She remembers everything, has only her mind that made her human. She became a bit cheeky because of this. She became terrified of vehicles because she couldn't forget the painful feeling and the sight of her brother.

After several upgrades, she became able to forget. She also started to eat, drink, sleep, dream, and several other stuff after some upgrades/downgrades by her father at her request to grow normally into a normal person. She still excelled in classes despite of this and attended the prestigious Republic Science Academy of the Philippines.

Becomes best friends with Lawrence Zy and Sophia Feliciano. They frequently hang out watching robot-related stuff and sometimes allows her friends to tinker with her.

Seems to have immense knowledge in robotics and artificial intelligence, which made Rinna survive in the form of a robot. He performs many upgrades and downgrades to Lemma on his secret computer room on the basement of his house in the slums.

Formerly known as Tomoya Hagiwara from Japan. He was a world-class scientist who was known for his thesis on the replication of the nervous systems of simple lifeforms. He fell in love with his colleague Sachi Tokimura, who died after a suicide, but because of their experiments, was able to recreate her with the being called Chisa. It was revealed that Chisa was the one who told Tomoya to live a new life just as she was able to, and to call himself Carlo, meaning free man. Escapes to the mountains of interior Japan and eventually into the slums of the Philippines, where no one will know him.

Best friend of Lemma Pumping and Lawrence Zy. They all bonded from their Star Class at the 4th grade after they discovered their mutual interest in robots. Harsh towards Lawrence, but soft to Lemma.

Becomes friends with Lemma and Sophia after discovering their mutual interest with robots, with Lawrence knowing Lemma being a robot herself.