What is green arrow villain?

Green Arrow, a DC Comics superhero, has a number of iconic villains, including:

1. Deathstroke (Slade Wilson): He is a highly skilled mercenary and assassin who has battled Green Arrow on multiple occasions. Deathstroke is a formidable opponent who possesses a range of superhuman abilities, including strength, speed, agility, and regenerative healing.

2. Merlyn (Arthur King): Merlyn is a highly trained archer and marksman who is considered to be Green Arrow's arch-nemesis. He possesses extraordinary abilities with his bow and arrows, able to shoot precisely from great distances, often with deadly intent.

3. Ra's al Ghul (The Demon's Head): Ra's al Ghul is an immortal eco-terrorist who seeks to cleanse the world of its impurities. He is a highly skilled martial artist and has access to a powerful army of assassins known as the League of Assassins.

4. Count Vertigo (Werner Vertigo): Count Vertigo is a supervillain who has the ability to disorient his enemies with sonic waves that alter their sense of balance and perception. He is a skilled hand-to-hand combatant and marksman.

5. Brick (Daniel Brickwell): Brick is a metahuman with superhuman strength and durability. He was once a gang leader in Star City, and has clashed with Green Arrow on numerous occasions.

All of these villains pose significant threats to Green Arrow and have been responsible for some of his most challenging and memorable battles.