Arachnea is a villianess in Yes! Pretty Cure 5. The third Nightmare to appear, she is a woman who transforms into a spider-like creature. In her human form she has short light purple hair and wears a red office dress suit. Along with Hadenya, are the only female employees of the Nightmare.
Arachnea appears as a somewhat creepy woman wearing a business outfit. Her true form is that of a humanoid spider/spider lady with six of the "legs" coming out of her back. She is able to shoot webs and use them to tie up the Cures, which makes it harder for them to fight back.
Arachena is permanently revived in Pretty Cure All Stars DX 2