The Rogue

Basically, The Rogue is an all new Dark elixir troop, which probably shouldn't cost very much DE, in between 30-110 DE. Basically what I thought about it is it could be the fast running 24 speed, an okay health of 375, and a damage per second of 70. It would be a dark looking troop, and be hunched over because rogues were usually said to be stealth masters. It would be as tall as a barbarian or archer, but a little increased speed. With a long curved sharp knife backwards in the hand, used as a weapon. It would have black clothing, very bright eyes to stare into your soul, and a red mask and long black hair covering a small part of it's face.

What makes it different than other troops?
How would you use this in an army?
Which TH would it be accessible at?
How can you defend against it?

What is this troops overall purpose? All you gave me is the description of what it looks like and not too many stats. We need more. What strategies is it good for, Housing Space, DPS, ways to defend against. Etc. More detail needed for this idea.