Rumplestiltskin is also known as the Dark One. The Dark One is the most powerful being in every dimension known to the fairytale world. Even though he is rotten to the core, his true love, Belle French exposes him to the light. The light surrounds him but he is always drawn back into darkness by the desire for power and supremacy.
Her plan is truly wicked. Her envy of Regina got the better of her. She wants to get her revenge by going back in time and the Evil Queen's stepdaughter's mother, thus preventing Regina to be born. She died, her spirit goes back in time, and kills Robin Hood's wife and masquerades as Maid Marian. Her story is too much for one page. All in all, her revenge story has its ups and downs.