Dr. Doom
Doom's encounters with Norman Osborn are summarized in The Onset, The Dark Avengers and Norman's Downfall sections
Prince Namor
Namor's encounters with Norman Osborn are summarized in The Onset, Iron Man, X-Men and The Dark Avengers sections
Emma Frost
The Hood
The Hood's interactions with Norman Osborn are summarized in The Onset, The Avengers Initiative and Norman's Downfall sections
Loki
Loki's interactions with Norman Osborn can be summarized in The Onset, Mighty Avengers and Norman's Downfall sections