Lady Kale, Princess of Avalon is an evil witch who is the antagonist of the first season of the 1995-1996 children's fantasy animated series Princess Gwenevere (Starla) and the Jewel Riders as well as a secondary villainess of the second season, voiced by Corinne Orr. She and the show's Morgana later inspired the character of the Dark Sorceress in Avalon: Web of Magic.
Lady Kale is a banished member of the royal family of the magical kingdom of Avalon. She is a beautiful but mean, selfish and cruel twin sister of the reigning Queen Anya—making her an aunt of the series' teenage protagonist Princess Gwenevere. Kale dwells in her dark Castle Thornwoods. Serving her are three evil animal stooges, consisting of her beloved dragon Grimm and a duo of pet dino-weasels named Rufus and Twig that are magically bonded with her, and some human minions including the Outlaw.
Kale is vengeful and deeply envious of both Anya's throne and the powers of the good wizard Merlin, and firmly believes Avalon rightfully belongs to her. Having discovered the powerful magic jewel she calls the Dark Stone, she ruthlessly seeks to master all the magic of Avalon, destroy her sworn enemy Merlin, and plunge the realm into darkness to rule it forever. For the first time in Avalon's history since the fall of Morgana and the ancient wizards, the whole kingdom is in peril—and so the young Jewel Riders embark on a grand adventure to thwart Kale's bid for power and free the realm of her menace for good.
During the conclusion of the first season in the episode "Full Circle", the girls succeed to activate the good magic of Avalon to be turned against Lady Kale (Queen Kale) when she tries to take control of it, and she is destroyed (trapped and then shrunk and vaporized). At the start of the second season, however, Kale is restored and returns alongside the extremely powerful evil sorceress Morgana. In the end, the good Lady of the Lake (Spirit of Avalon) gives the Staff of Avalon is given to Kale's good niece and a follower of Merlin, Princess Gwenevere, who uses it and her Sun Stone to activate the combined powers of the Wizard Jewels in the episode "Lady of the Lake" ("Spirit of Avalon"). Attacked by Kale, Gwen casts a petrification spell, defeating her evil aunt once and for all.