Alas, honorable gentlemen, nobody guessed it. Here is another hint for you: at the end of the WWII our special guest possesed the rank of a Rear Admiral.
Sadatoshi Tomioka
Yet again - thumbs down, my dear Mr. Gumalangi. So sorry.
Nagano Osami
No, not much resemblance. He ordered the attack on Pearl as well, hardly “daring goodliness”.
Shigeyoshi Inoue?
Takijiro Onishi.
Burt Kwouk?
Well, even less resemblance. Furthermore Shigeyoshi Inoue was Full Admiral by the end of the war not Rear Admiral as Librarian’s hint told.
Sorry, honorable gentlemen, but our mysterious personality still is unnamed. However, here is another tip for you – our man was a highly important personal factor within the Third department of the Imperial Naval General Staff. 
Toshitane Takata
No, my dear Mr. Flamethrowerguy – our celebrity is not mentioned in the open catalog of the interrogated officials of the IJN. 
Of course, he was interrogated, but his name was publically mentioned only in 1960, and almost candidly praised in a book that was printed for the first time in 1977, which, however, always represented some kind of a… painful opprobrium for the US officials.
I am really trying to do some serious research (-: My heads already smoking, it’s a tough one!
I guess we have to surrender on that one, Mr. Librarian. Please redeem us!
So sorry for my protracted silence, honorable ladies and gentlemen, but unavoidable professional obligations really are a “killing factor” for my personal participation in this highly intriguing game.
So here is the answer: our mysterious personality was a rear admiral of the IJN, a master spy and utterly capable organizer of secret operations, Rear-admiral Kanji Ogawa.
His achievements were almost openly praised in a book The Pearl Harbor Cover-Up, by Robin Moore and Frank Schuler (published by Pinnacle Books, New York – 1976). I think that this book still is offered by Amazon.
I allow myself to continue on this game and I hope this one won’t be too easy. Who’s that elderly fella on the picture little more than 30 years after his military climax? One hint: he’s not Marlon Brando in “The Godfather”.
Adolf Galland.
Galland, or not?
Either him or his identical twin brother. You’re up!
Of course you’re right, RS*, Adolf Galland in 1977 aged 65. Sorry for the delay.