Who's who is kuro
Just reminder that Captain Kuro is based on the arc villain of the famous work 1984 by George Orwell, O'Brien.
Both Kuro and O'brien adjust their spectacles constantly
Both manipulators of the highest order
The leader of the resistance movement in 1984 was called Goldstein/Kalador (the resistance was in fact fake and invented by O'Brien)
Kalador is a very unusual name, same as the fake name and persona used by Captain Kuro to fool everyone. which was
Klahador
As these connections are rather obvious, he will most likely be an intelligence officer for the WG, same as O'Brien was the chief intelligence officer for the Party, the ruling organisation in 1984
Believe me, Oda has borrowed a lot of shit from 1984