She is a Nazi commander and warden during World War 2. Ilsa was regarded as one of Hitler's best commanders and feared by her foes. In the Nazi camp, she tortures her prisoners and subject her male inmates into cruel torment by rape and seduces them. One prisoner, Wolfe managed to resist her and Ilsa fell in love with him. He managed to tie Ilsa to her bed and left to free the other prisoners. The Nazis stormed into Ilsa's cabin and she thought that they would rescue her. However, they shot her in the head and the war was over.
Ilsa is a ruthless warden and the titular villain of the movie series. She took on several occupations throughout the film series. She was portrayed by Dyanne Thorne.
In “Casablanca,” one door closed on Rick, with the final departure of Ilsa, but another door opened, as Bogie (Rick) and Claude Rains (local Captain Louis Renault) walk off into the distance together, as best of friends, “Louis, this could become the start of a beautiful relationship.”
This breakup was unexpected, classy, heartfelt and totally believable. As Bogie in a few deft lines, expressed his love for Ilsa, but also persuasively explained why she must get on that plane without him. And never see him again.