I thought this was an intriguing thread and invested more time doing research on it than I should have but it's hard to leave a stone unturned in pursuit of a good story. I was able to find several candidates who were able to fulfill some the criteria you laid out above however, there wasn't any single person who could meet all the requirements of being at Bay of Pigs, The Congo, be around Carlito Brigante prior to 1975, have a Corsican connection and worked for the CIA. The best possible candidates I found were; Arnaldo Ochoa, Eulalio Francisco (Frank Castro), Sal Magluta and Barry Seal, Rolando could be an amalgamation of all four persons.