The brilliant Howard Stark is a bit of an enigma: He has never been prominently featured in Marvel comics, mostly being alluded to and spoken of in the comics. Recently, in Iron Man, he was fleshed out more in the introduction of Arno Stark (you can read about that whole convoluted mess on your own). In Hickman’s S.H.I.E.L.D. series, we see him as a confident agent of the Brotherhood of the Shield, helping defend the Earth against a wide variety of threats.