Don't forget about Brad Wong and Ayane. 
Free Step Dodge
Lulu
Force_of_Nature
Ayane's & Lisa's are two of the most useful BT dashes.
Goarmagon
I was just about to come in here and say Ayane.
Lulu
And with that said, I never actually had any use for BT Forward Dashing.
I honestly don't know what its for.
I honestly don't know what its for.