Killua Zoldyck

Hunter x Hunter series is one of the best anime series of all time and inside it, Killua Zoldyck is the main antagonist of . He is the middle child of the prestigious Zoldyck Family and maintains a deep friendship with Gon Freecss.

Killua is introduced as a character who is similar to Gon in that he is funny, optimistic and full of malicious ideas. He is also one of the series' most clever characters. He is confident in his abilities while remaining humble about them.

In Hunter x Hunter series, Killua has demonstrated remarkable speed comparable to Gon's, as well as great responses, reacting quickly to the tiniest amount of danger. He can produce many sequels of himself and fade out of sight because of his speed and agility.

Killua's top speed is estimated to be 150 miles per hour. Killua reacts to all attacks automatically while Godspeed is active, so attacking him is extremely difficult. Killua's speed is truly incredible even without Nen, ranking him among the fastest assassin anime characters ever seen.

He moves so quickly that his opponents may lose track of him, allowing him to deliver a fatal blow before they know what has happened. Killua Zoldyck, in essence, embodies the idea of a speedster, capable of achieving astounding speeds comparable to the speed of light.

Anime: Hunter x Hunter

Watch here: https://www.crunchyroll.com/series/GY3VKX1MR/hunter-x-hunter