He's easily the strongest of the five and serves as the Dark King's right-hand man. His defensive abilities are solid—he can block attacks like the Marble Screw without much trouble—but he's not as physically durable as Gekidrago, so a direct hit still does damage.
When he first showed up on Earth, he mostly held back. Things got serious only after Kiriya got sent back to the Dark Zone. He takes his first real loss in episode 24, but makes a brief return in episode 25 with a monstrous, far more powerful form that drags Pretty Cure into the Dark Zone.
Visually, he's a large, pale, bald guy with pointed ears and dark-rimmed eyes that look similar to Kiriya's. He wears a white robe and carries a purple prism stone.
Content compiled by AnimeList.moe from publicly available sources.