Read more about Contessa Valentina Allegra de Fontaine at: Wikipedia

Official Site: Marvel Comics

La Contessa Valentina Allegra de la Fontaine is a fictional, comic book espionage agent in the Marvel Comics universe. Created by writer-artist Jim Steranko, she first appeared in the "Nick Fury, Agent of S.H.I.E.L.D." feature in Strange Tales #159 (Aug 1967).

The Contessa appeared prominently throughout creator Jim Steranko's run of the Nick Fury, Agent of S.H.I.E.L.D. feature that ran through Strange Tales #168 (May 1968) and in the same-name comic-book series that began the following month.

An agent who literally threw S.H.I.E.L.D. chief Nick Fury for a loop upon their initial meeting, she quickly became his love interest, and was featured in a silent, one-page seduction sequence in Nick Fury, Agent of S.H.I.E.L.D. #2 that famously had two panels changed, at the behest of the Comics Code Authority. In the third-to-last panel, de facto Marvel art director John Romita Sr. redrew a telephone that had been taken off the hook for privacy, placing the receiver back in the cradle; in the last panel, an image was removed and replaced with a closeup of an item from earlier in the page — a phallic long-barreled gun in a holster:

So one panel had the stereo in Fury's apartment to show there was music playing, cigarettes in the ash tray in one, there was a sequence of intercut shots where she moved closer to him, much more intimately, there was a kiss, there was a rose, and then there was one panel with the telephone off the hook, which the comic book code [ sic; "Comics Code" ] made him put back on. ... [T]he last panel on that page had Nick and his old lady kneeling, with their arms around each other, and that was entirely too much for the Code, so the panel was replaced with a picture of a gun its holster.

Contessa Valentina Allegra de Fontaine has not been a contender in any CBUB matches.