Batman: Arkham Knight Nightwing Action Figure: Nightwing will stand at Batman s side once more to fight the villains of Gotham City! Based on the designs of the 4th installment of the Batman: Arkham video game series, Dick Grayson has suited up with re-designed armor and a set of deadly weapons! The Batman: Arkham Knight Nightwing Action Figure measures approximately 6 3/4-inches tall.