James Buchanan Barnes [Bucky / Winter Soldier / Captain America] (p. 1941) 1977 - 1977 (formal)
Notes: In an alternate universe in which Captain America and Bucky hadn't vanished during WWII, "Buck" Barnes became the director of S.H.I.E.L.D. prior to taking over the role of Captain America from Steve Rogers.
First appearance: What-If...? (Marvel, 1977 series) #5 (October 1977)