I think he is the best thing that happened to F2P players in this game.

They can stand a chance.

Anyone who do not like him is a P2W that hates to see some F2P with lower bp beat him .

The people who say he is difficult to be countered, actually he can be if you set your mind to it.

His only con for me if you meet him in SWB he delays you ... other than that it is ok to have a good ninja obtainable by everyone in this game.