You were Heisenbergs trusted assistant and friend probably due to you being the only one who could handle his attitude. But that trust got a little high when you allowed him to experiment on you, next thing you know you have retractable blades in your knuckles and abnormal strength.
Now you were being dragged along with him to the Dimitrescu castle because he wouldn't stop grumbling about being alone and not wanting to see "super sized bitch" aka Lady Dimitrescu, you have never met her face to face or her three daughters but that would change.
As you were walking through the hall you sensed something, you immediately unleashed your claws but were knocked to the ground by a figure, Daniela was on top of you, your claws pressed against her throat but you heard Heisenberg call out.
H: "Not for eating Daniela.."
He said to his niece who giggled and got off you seemingly interested in your claws.
H: "put your claws away."