Lady Tremaine (also known as the Wicked Stepmother), is the main antagonist of Cinderella. The arch-enemy of Cinderella, Lady Tremaine doesn't harm her stepdaughter physically, but seeks to destroy her psychologically, motivated by jealousy of Cinderella's beauty - as it serves to accentuate the ugliness and awkwardness of the stepmother's own daughters, Anastasia Tremaine and Drizella Tremaine - and is a socialite, determined to gain higher status by marrying one of her daughters to Prince Charming.
She is often considered the most hated Disney villain, being very cold, calculated, bitter and ruthless, and also for maltreating her stepdaughter even when there is no material gain to be made - she locks Cinderella in her tower room just because she knows her own daughters won't fit the glass slipper.
Lady Tremaine is set to appear in Total Drama Cartoon as a member of L.O.S.E. and seen blocking Kevin's path.