Kylo Ren

I believe that the sith lord that is shown in the trailer is called Kylo Ren.He is shown in trailer sevreal times.But he is normaly shown in his big black cape.He holds a lightsaber.His lightsaber is made in a strange way beacause on his lightsaber it has a hilt. Now I thought that the hilt was there to protect your hand but at this point, it would just cut your hand off! This is because it has two blades coming out at the side of it.