Iron Man
When Iron Man was briefly trapped in Hell by Doctor Doom, Iron Man faced what appeared to be Howard as one of Mephisto's torments. The spirit "wore" a demonic version of Iron Man's armor and taunted Iron Man about emotional weaknesses. Iron Man rejected the spirit's reality when it claimed that Iron Man had been a disappointment to his mother as well as whatever problems there were with his father, Iron Man knew of being loved by Maria unconditionally.