As noted in the official press release, he is extremely loyal to the people of Attilan – the secret city where Inhumans live – but is distracted by his desire to be the king.
Created by Stan Lee and Jack Kirby as one of the original Inhumans introduced in 1966, Maximus Boltagon – a.k.a.
Maximus The Mad – is one of the most powerful members of his alien society.
Like the other Inhumans, he was given abilities after being exposed to the alien Terrigen Mist, and specifically possesses a genius intellect and is a remarkable inventor.