Isn't Melek from the Kiranka clan?
"Melek began to wish he had never accepted the post as Thrakhath's chee'dyachee. As senior vassal and retainer to the Crown Prince, he wielded great power and commanded much influence . . . and was perfectly placed to watch the Imperial family in the interests of his own Clan."
from CHAPTER XIX of Heart of the Tiger
Judging by the fact that Melek was once a senior vassal of Thrakhath, he may have had the right to add Kiranka to his full name... But according to the rules in Freedom Flight, it might also be "Melek hrai
Anyway... From his critical words about Thrakhath and the emperor before he expressed his willingness to surrender to Blair, it is not like he would continue to use names like that.
The False Armistice did amplify resentment towards anyone who was Kilrathi even after the Treaty of Torgo.
But when you think about it, it's not suitable to point the finger at every Kilrathi.
First of all, the warring empire was not ironclad, and many clans were disgusted by the dictatorship of the emperor's family, Melek being one of them. And, the matter of the False Armistice was rather complicated; it was a conspiracy of killing two birds with one stone used by the Emperor to strike both internal political enemies and humans. It is also true that some Kilrathi are releasing friendly signals to humans after the war. Together with the dangers of Nephilim, it is necessary for humans to maintain carefully a better relationship with the willing Kilrathi after the war.
In WC4 FMV, at least Eisen, Blair and Sosa got along well with Melek on the Intrepid.