Where any comic book not strip characters ever based on Gina Lollobrigida Did she do walk-ons?

There is no evidence that any comic book character, strip or otherwise, was directly based on Gina Lollobrigida.

While Lollobrigida was a major international film star, she was not known for appearing in comic books or strips. She did make appearances in various television shows and films throughout her career, but these were not typically in comedic roles.

It's possible that a character might have been inspired by her beauty or persona, but there are no documented cases of a specific character being based on her.