arrogant, sly, and rude, but also as someone who can control himself. He may also have a superiority complex. 
Arrogant 
Kaiser may see himself as the star of his world, and others as small time actors.
He may be rude to people he considers beneath him.
Sly 
Kaiser may be slyly rude to people he considers beneath him.
Controlling 
Kaiser may know when to control himself around people who are superior to him, such as his team leader.
He is Kaiser from blue lock.