Does somebody know name of this set ?

[Haitay]

http://i44.tinypic.com/kcmcyt.jpg

[Brisk]

that is not a set, that is an avatar which I kinda forgot the name. But you can buy it as an avatar

[serpento]

its the shadow avatar but recolored to red

[Kira]

Red Devil Avatar ;-;

[Godlike]

Called the "Red Devil" cost 40000 bounty

[Brisk]

Called the "Red Devil" cost 40000 bounty

Red Devil Avatar ;-;

As said, you may find the item inside the shop ingame under the Avatar's as well as many other Avatar's.