Janssen's debut on the big screen was in the 1992 movie Father & Sons, where she starred alongside Jeff Goldblum.
She then appeared in Star Trek: The Next Generation (1992) and Melrose Place (1994).
Her next appearance in cinema was in the 1995 horror movie Lord of Illusions. The same year, Janssen played Xenia Onatopp, an assassin working for the renegade agent 006 Alec Trevelyan (Sean Bean) in the James Bond film GoldenEye.
Another one of Janssen's most recognized roles is that of Jean Grey in Marvel's X-Men. Throughout her career, she has played the character in a total of five movies.
