Mystic monster: Z-Morbus

Sero waits and knows that everything can be possible, like its plan of defeating Balonchi may gets failed, or one of his teammates will die. But he didn't waited that one of his teammates will betrays him. Arias, his close friend from childhood betrayed him by revealing to Balonchi his secret bunker. Arias didn't want to betrays his friend Sero at first, but Balonchi talked about his future if he becames with him and helps him defeating A-Kitus. Arias has a new name after gaining his own robot, similar to Sero, and it's Z-Morbus.