Scathach

Scathach is a Great Old One and one of Nyarlathotep's commanders.

She is a major antagonist in Seeds of Evil.

Physical Appearance
Scathach resembles a teenage girl with dark magenta skin with white markings and an almost petite body. She has tentacles for hair, a cape-like membrane used for flying, and two lavender orbs attached to her forehead and chest respectively.

Personality
Scathach is a reserved alien who will stop at nothing to achieve her revenge against Lightsen. However, she seems to enjoy fighting more than anything, but very few would dare to say that her love for fighting may spell her doom one day.

Combat Mastery
Scathach has the highest level of combat proficiency (armed and unarmed) and is able to perfom feats beyond normal comprehension. She has fighting capabilities on par with that of the Outer Gods and Arkeans, thus allowing her to fight Lightsen or Nyarlathotep on equal footing. Thanks to her level of combat, Scathach is one of Lightsen's most powerful foes.

Supernatural Strength
Scathach's strength makes her more powerful than any other Great Old One and is able to lift objects of seemingly infinite mass and weight. She combines this along with her combat skills to overpower her foes.

Supernatural Durability
Scathach is also the toughest of her species and is able to survive things that would otherwise kill Great Old Ones, such as black holes (temporarily), devastatingly powerful attacks, and so on.

Alien Magic
Scathach has a dab of tapping into magic that exceeds limitations of even Underworld Magic, and thanks to her sheer willpower, she will not go insane from it.

Master Seductress
Scathach is not only an expert at combat, but she is also capable of charming and manipulating her opponents. However, her seductive intuition is second only to Shub-Niggurath. Only naïve people like Lightsen is immune to Scathach's charms.

Immortality
Scathach is immortal and cannot die from natural causes. However, she can be killed by extraordinarily powerful beings, such as Outer Gods or Arkeans.

Giant Form
Scathach can transform into a titanic abomination, which is said to be her true form. In this form, she resembles a three-headed dragon each with flower like jaws and stands at 465 feet tall.

Trivia

 * Scathach is loosely based on a Lovecraftian cosmic entity of the same name.