Thread:HubStyle/@comment-4220590-20190712171749/@comment-4534122-20190713040117

In Episodes 4 and 11 his name is written in cast credits as 諜報局長. In Episodes 23, 26 and 33 his name is written as 諜報局長官.

From Wikitionary:

As 諜報 means intelligence and 局長 means head of agency, the 4 symbol variant can mean either Intelligence Director, Intelligence Bureau Chief, and so on and so forth. The 5 symbol variant is closer in meaning to Intelligence Division Head, where 局 means Division and 長官 means head of section of government.

With respect to the United States Cabinet, the Director of Central Intelligence (DCI) appears to be the correct analog, but I will leave how the wiki chooses to interpret it to you.