This page is for describing Captain Kaizo's relationships with other characters.
In general, Kaizo thought little of what the earthlings could do and thought they were incapable of possessing the power bands that gave them their powers. However, due to Fang's betrayal, he offered another chance to them to regain their powers and his opinions changed of them. He had even extended an invitation to join his team, but was rejected, though respected their decisions and went about his way, even warning them that trouble may soon arise.
Initially, Kaizo thought little of BoBoiBoy and thought of him as someone incapable of possessing the power band. However, BoBoiBoy was the only one capable of keeping up with Kaizo's vicious attacks and incredible power. Although BoBoiBoy was unable to defeat him, Kaizo soon accepted BoBoiBoy as someone worthy and had even invited him, along with his friends, an opportunity to join his team.
Although he declined, Kaizo respected BoBoiBoy's wishes and even warned him that trouble may soon arise because of his possession of the power band, and went on his way.
Despite being an indifferent individual and sometimes cruel, Kaizo is a good efficient leader. Though he can be strict with the people in his team, particularly Fang, he never treats anyone unfairly or unjust.
Lahap is a member of Kaizo's team and has shown undying loyalty and faith in his captain. He never refers to Kaizo by his name, but respectfully and formally as 'captain'. Kaizo seems to trust in Lahap's abilities and in return for his undying loyalty, Kaizo treats Lahap well.
Kaizo can quite cold to the people around him, even his own younger brother Fang. He doesn't hesitate to use force to teach is brother a lesson, and often times can seem unnecessarily cruel to his younger brother. However, despite all that, Kaizo is shown to care for his brother in rather unusual ways. He was noticeably irritated when he figured out that Fang had defected and went against him, which is probably his way of being upset and disappointed that Fang betrayed him.
The strongest indicator of their good relationship with his brother can be found in Kaizo's nickname for him, 'Pang'. When they were younger, Fang had trouble saying his own name, as young children had trouble with the 'F' pronunciation, where he pronounced it as Pang. As a result, Kaizo continuedly refers to Fang with this nickname, showing that deep inside the indifferent exterior, that Kaizo does indeed care for his young brother.
Kaizo was presumably the one that had raised and trained Fang to be a fighter and Kaizo seemed confident in Fang's ability as well, depending on him when needed.
Even though they never seen in the series, they are both mention by his brother in Season 3, Episode 23 . In one of fanmail mention that they are still alive and life in their homeplanet. And also In fanmail of BoBoiBoy Comic Magazine Issue 62 mention both Fang and Kaizo still able to visit them as often as they can if they are have free time aside from their duty, consider that he and Fang probably have good relationship with them even Kaizo and Fang live separated from their parents.