Ascendants are mystical relics which were previously owned by the Parker Family. An Ascendant can be used to harness the power of a celestial event to create a portal to a different dimension and allow a person to travel through it. The Gemini Coven in particular used the relics to create Prison Worlds in order to trap former and current members who had broken their laws away from innocent humans. An Ascendant was first seen in Black Hole Sun when Bonnie Bennett used a locator spell to find the Ascendant to the 1994 Prison World, only to find that Malachai Parker had it all along.
There are five known Ascendants to have existed alongside of their respective Prison Worlds: one that could access the 1903, 1994, 2018, 2029, and 2030 Prison Worlds. Each replica within the four aforementioned prison worlds is meant to be used to return to the living world. Initially there were no longer any Ascendants in existence, as the previous 1903 and 1994 ascendants were destroyed with magic and their copies destroyed in the prison world upon the death of the Gemini Coven's leader, Kai, in I'm Thinking Of You All The While. However during the events in It's Been a Hell of a Ride, Bonnie aided Hope, Lizzie, Josie, Jax, Nina, Lily, and Lia in creation of another one, which they used to imprison Kai once again.