|Portrayed by||Stephen Spinella|
|First appearance||Nothing to Hide|
|Home||New York, NY|
Oliver Dennison is a reporter for the New York Journal.
Angela and Heidi Petrelli invite Mr. Dennison out to brunch at Nathan's home in Long Island, with hopes that the exposure (and placing a positive spin on Heidi's disability) will provide Nathan with a boost to his campaign in the pre-election polls. However, Dennison seems more intent on exploring Nathan's ties to Mr. Linderman. He reveals that he has information about Nathan's interlude with Niki Sanders, but Peter tells him that the blonde woman seen with Nathan is a depression specialist whom Nathan was meeting with about Peter's mental health.