Zein Cayman

"'First we have the leader of Erste, Zein Cayman,' Vee pulls a pointer out from nowhere and directs it to the first picture, 'President Cayman was inaugurated as President of Erste over 4 years ago. He was recently reelected at the beginning of this year due to his popularity amongst the Erstean populace. Zein Cayman advocates a strong military, but his policies also place the people of Erste first, making him very popular. He's often credited with being one of the leading forces behind Erste's victory over Earth 2 years ago.' - Vee"

As the President of Erste, Zein Cayman is one of them people responsible for Erste's use of the Radion Bombs in the war. Thus, many people have understandable grudges against him.

Act 2
Shortly after arriving back in their Homeworld, the Nuada was contacted by Cayman on a secret channel. At the time, nobody in the Earth Sphere should have even known they were here, and yet he personally contacted them and invited them to visit him and talk.