Elizabeth Shue replaced Claudia Wells as Marty’s girlfriend Jennifer Parker in Part II but had equally little to do.
She exhibited some brief eye-rolling at the beginning at the ideas of a time machineand then the Doc put her to sleep. She slept through most of the film, waking up only briefly for the her big moment when her older and younger selves met each other in 2015: each recoiling into a dead-faint in shock-horror at the sight of the other’s wig – Jennifer did not re-awaken until the end of Part III.
Ken Chase created the makeup for both Back to the Future and Back to the Future Part II. Michael Mills & Kenny Myers were credited for makeup application for Part II and as the key makeup artists for Part III.