I had a look at this comic in Forbidden Planet yesterday. Is it set in an alternative continuity to the rest of Trek? I don't know about the previous books in the series, but here Byrne has the Klingon Empire being ruled by an emperor, whereas it's been clearly established in canon material that the empire had no emperor at this time period, nor had there been one for a while. Koloth is also in a secret relationship with the Klingon Princess!!