She starred as Robocop's partner: "Officer Anne Lewis" in
"RoboCop 1" (1987). She was nominated for a Saturn Award for Best Actress. "RoboCop 2" (1990). "RoboCop 3" (1993). She was nominated for a Saturn Award for Best Supporting Actress.
In 1988, she starred as Patricia Wilson-Gardner in "Poltergeist III".
She continued acting in various roles into the Early 2000s...
In December 2010, Allen was named executive director of the weSPARK Cancer Support Center, which was founded by her longtime friend and "I Wanna Hold Your Hand" (1978) and "1941" (1979) co-star, actress Wendie Jo Sperber, who died from cancer in 2005...
Of her work at weSpark, she said: "That is what I do. That is what my life is dedicated to. I'm there, I run it. I've created the whole program format and I fund raise. It is my life's work."