The Adder of Lykos is a character in "The Crown & The Flame" series. She is first seen in Book 2, Chapter 7. She is Raydan's sister.
Adder has mid-length, black hair, brown eyes and tan skin. She wears a golden dress, a gold necklace, and a Snake bracelet.
Adder is said to be extremely ruthless and vicious and is the Queen of Lykos' Criminal Underworld. Her main weapons are daggers dipped in Snake venom, which is how she got her name. She is the leader of a group called The Order of The Black Asps.
Although she is egocentric, she still respects Kenna and gives entitles her to support, mainly because she detests Luther Nevrakis and wants to take control of Lykos, but also because she genuinely admires Kenna for her intellect and wit.
Adder and Raydan grew up poor in the streets of Lykos and had to resort to thievery to survive. Adder rises up the ranks and becomes a feared and respected leader of a team of assassins and thieves. She offers Kenna her poisoned dagger and helps her get into Zenobia's ball in return for a necklace. She also supports Kenna in Book 2 and Book 3, providing assassins for the final battle. At the end of Book 3 she gains control of Lykos as Kenya's vassal .
Raydan is Adder's brother. They are on rocky terms when they first meet in Book 2, Chapter 7 she mentions that they had a falling out in which she threatened to cut him up if she ever saw him again. Raydan regains Adder's trust and respect in Book 3, especially after he returns from spying on Empress Azura. She sends spies to help him escape the Iron Kingdom, suggests that she is willing to protect her brother and also that she understands his every move and motive. They are on good terms at the end of the book, having rekindled their brother-sister relationship.
Adder respects Kenna's intelligence, strength and determination. She pays her respect by offering her support.