I agree that the name Kraka is a bit unfortunate.
For anyone that doesn't understand, in the USA (not sure about elsewhere), "cracker" is a slang, derrogatory term for a caucasion (white) person. It is offensive and inappropriate to use... so Kraka sounds a lot like "cracker," and could bother some people. And the fact that the brownish orc may be symbolizing someone of African-American descent makes it even more controversial.