Nick Fury
Renowned actor Samuel L. Jackson was chosen to bring the espionage expert and director for the S.H.I.E.L.D. agency, Nick Fury, to the big screen. He then became a recurring character in the Marvel Cinematic Universe after his brief appearance in Iron Man 2 (2010) and in Spider-Man: Far from Home (2009). Although his clothing and general appearance have not evolved, you can clearly see a more mature Nick Fury in the newest releases.
S.H.I.E.L.D. stands for Strategic Homeland Intervention, Enforcement, and Logistics Division,
not "Supreme Headquarters, International Espionage, Law-Enforcement Division" as is claimed here. Get it right, man...