Chief of Staff Thaddeus "Thunderbolt" Ross

A gruff military presence in the Marvel Universe, Chief of Staff Thaddeus "Thunderbolt" Ross made his debut in Captain America #3 in 1997, born from the creative partnership of Rob Liefeld and Jeph Loeb during comics' Modern Age. With only a handful of catalogued appearances spread across Captain America and Iron Man, he's a rare find — the kind of deep-cut character that serious collectors love to track down. Sharing pages with the likes of Dum Dum Dugan, Brock Rumlow, and even a glimpse of Harry S. Truman, Ross moves in consequential company that speaks to the high-stakes military and espionage world he inhabits.