Rumpelstiltskin

Rumpelstiltskin is a character in the Avengers Grimm series, played by Casper Van Dien (Avengers Grimm), Eric Feltes (Avengers Grimm: Time Wars) and Johnny Rey Diaz (Sinister Squad). He is a villain in the two Avengers Grimm movies, but an antihero in Sinister Squad. In Avengers Grimm: Time Wars, Rumpelstiltskin says that the Rumpelstiltskin in the first movie was actually a different person from his character in Sinister Squad and beyond. It is not perfectly clear if this is true or not.

He is based on the character in the Brothers Grimm fairy tale "Rumpelstiltskin."

Avengers Grimm
(incomplete)

Sinister Squad
Rumpelstiltskin is stuck on Earth after destroying the Magic Mirror. He was supposed to give Death the mirror so that he could take over Earth, and is now in trouble with Death as he cannot use the mirror when it is broken and their deal cannot be completed. Death's Messengers are hunting him down to get this revenge.

Alice sends Piper and Goldilocks to get information about Death from Rumpelstiltskin, resulting in Tweedledee knocking Rumpelstiltskin out, capturing him, and bringing him to Looking Glass headquarters. Alice wants information about Death and his scythe from Rumpelstiltskin so that she can stop Death, but Rumpelstiltskin is reluctant to help until she threatens him with a bomb strapped to his wrist. Part of helping Alice involves convincing Gelda to help Alice as well, which he does by secretly convincing her that they will escape together.

Gelda eventually gives up on Rumpelstiltskin's plan, but he tells Alice that he will convince her to stay. On his way to find Gelda in the armory, Death appears and offers him a deal: he will let Rumpelstiltskin be ruler of the Underworld if he gives his human body to Death so he can take over Earth. Rumpelstiltskin accepts the deal, and kills Gelda so that it will still look like he is on Alice's side so she won't blow him up.

Death informs Alice that Rumpelstiltskin was double-crossing her before branding Rumpelstiltskin's chest to prepare him for the ritual that will transfer Death's soul to his body. Alice's team begins attacking the villains, and feeling very betrayed, Alice tries to fight back against Rumpelstiltskin directly by kicking and punching him. But she soon senses when he doesn't fight back that he actually wants to stop Death just like she does, and that was why he broke the Magic Mirror in the first place. Trusting him, Alice lets Rumpelstiltskin go. He uses a piece of mirror that he stole from her to use his powers of persuasion and force her into a final deal -- as soon as he switches bodies with Death, she must blow up the bomb on his wrist.

After Alice does so, Rumpelstiltskin becomes ruler of the Underworld after successfully killing Death inside his human body. He revives the dead bodies of Piper, Big Bad Wolf, Tweedledee, and Tweedledum as a sign of truce with Alice, that they can trust each other from now on and peacefully watch other their own worlds. He then stays in the Underworld with Gelda.

Time Wars (incomplete)
Rumpelstiltskin grew bored of ruling the Underworld and abandoned Gelda there to return to Earth. Looking for new things to do, he ran into Magda the Mad and her plan to take over the world by marrying Prince Charles Charming. Rumpelstiltskin strikes a deal with Magda, that he will help force Charles to marry her if she gives him Atlantis in return.

In the end, Rumpelstiltskin disguises himself as Snow White in an attempt at tricking Charles into marrying him and giving him power over all the land. The plan is ruined, and a super-sized Alice throws him into the ocean. Magda then forces him into living in Atlantis against his wishes as revenge for him lying to her.

Gelda
Rumpelstiltskin used to be in a relationship with Gelda before she married a king. While Gelda was truly in love with him, Rumpelstiltskin seemed to mainly be in the relationship only to have her powers on his side. Indeed, he seems annoyed by Gelda's controlling and needy nature. Despite this, Rumpelstiltskin tells Alice that he loves Gelda even when she is not around to hear it and also says he is sorry after killing her, implying that he does have some real feelings for her. Despite this, he does eventually leave her in the Underworld, yet remains fearful of what she would do to him if they meet again.

Abilities
Rumpelstiltskin can spin straw into gold.

Rumpelstiltskin has powers of persuasion, which Alice calls his "silver tongue." He can control people by telling them what to do, and his eyes glow purple when he is doing so. After breaking the magic mirror, he could no longer consistently use his powers, requiring pieces of the mirror to temporarily regain his magical abilities. He is said to be nothing more than a conman without his magic.

Rumpelstiltskin can use pieces of the Magic Mirror along with DNA from other people (such as a piece of hair) to take on their form.