In other properties, Korath and Ronan are both members of the Kree government. Korath is the founder of the Pursuer Corps, which is "similar in function to the U.S. Marshal system". Ronan is the leader of the Accuser corps, which is kind of like the judges in Judge Dredd. This makes him second in command of the interstellar Kree Empire.
In the Guardians of the Galaxy movie, Ronan's role seems similar, but Korath seems like a completely different character. I didn't realize it was Korath at first. I'm not even sure he's a Kree.
For comparison, here's the appearance of Ronan and Korath in both the comics and the Guardians of the Galaxy movie:
Ronan, the Accuser
Korath, the Pursuer
Ronan's design is pretty faithful, even if his clothes aren't green. Korath's... not so much.
So, how does the movie version of Korath differ from the comics one? Is he a Kree? Is he a Pursuer? Why is he not blue? Do kree come in that color, in either the comics or the cinematic universe?