Only One Assassin has No Wind-Ups or Animations
It's this piece of trash: 
There are no wind-ups on his abilities to make you aware in order to "dodge" or rather "flash" them. The animations he has have no delay whatsoever making them instant damage.
"But he's an assassin" you say! I hear you. I really do. And I think you are correct. The problem is not that he is an assassin but that he is the most broken assassin out there. Why? No wind-ups, no animations.
Has an isolated range of control. She cannot blink like
but instead dashes making her more easily targeted with your cursor. She must also wait for her Q to hit in order to fully unleash her burst. She has no real CC to speak of considering it is evidently avoidable more so than most any other CC in the game.
Ekko at least has wind-ups on his W and his E must go through an animation (with sound queue). His ult is also always visible.
She has to hit you with a skill-shot (animation time) to get anywhere.
E and W do have wind-ups and E has a delay before the CC takes place.
Reveals his invisibility with a puff of smoke. He has no CC to use in the middle of a fight and no escape besides his ultimate which is easily found out.
Has a huge delay before his ult sets in which allows for a pop of zohnya before any damage whatsoever is done. Nevermind the rest of his abilities require animation delays before hitting or being used.
Three hits before his rather slow skill-shot. Targetable animation dashes with E. Shield is visibly up and W is the only thing without any delay but it doesn't kill you.
Visisbly shows when his stun is up. His slow is a skill-shot. Bushes are clearly visisble to avoid lunges. Ultimate alerts you to his presence.
Rather slow jump (targetable). Slow is a skill-shot plus an ult point to even get the slow. Q requires close range which to get to he has his jump wind-up. Ultimate is largely used after you know he is there rather than an entrance.
There is some delay with his Q animation before the damage sets in. Easy to tell where he will land after the Q. No CC. No invisibility.
Instantly blinks (not targetable) slowing you with no wind-up (unavoidable besides an early flash or zohnya). Q resets his AA. Ultimate is instant damage with no wind-up. W does have a wind-up yes. However by the time it's used he's already blinked to you at worst so it's impossible to miss anyway. His burst is the most instantaneous of any Assassin in the game by a mile. So much so it's bloody impossible to react quickly enough to avoid losing at least 3/4 of your health if not be dead by the time you realize he did things.
Yes, his laning is terrible. Doesn't make his lack of player-reaction acceptable.