Polly Nomial

Polly Nomial is an evil enchantress that was imprisoned by Count Vladsmir during his rise to power that escaped and her explosive power of her freedom messed with the Morphin Grid.

She was first first defeated by the Coaster Force Rangers as the Power Riders.

She later returned from the dead and awoken 7 beasts who took over the long since abandoned Mercer Mansion. Her new scheme saw the Coaster Force trapped inside and facing her "spears" in alternate relms, ending with her turning the Spears remains into Mega Slayer, with her controlling it. It is inferred she was destroyed in the explosion as she doesn't appear outside of a flashback in On Holiday.

Arsenal

 * Staff: She can awaken the dead, and possibly cast spells