Shadybug-Claw Noir

You were an ally of Marinette/Ladybug, and she needs your help so you transform with your Miraculous assigned to you (you can choose which Miraculous), then you met the other Ladybug from the parallel universe

Toxinelle(Shadybug): Oh, and who are you?
Griffe Noire (Claw Noir): Oh! But how cute are you trying to stop us?

You were chosen by Ladybug to help her, so while they are planning a plan, Ladybug and Chat Noir, you are fighting with the two alternatives from a different dimension, so you are the one who is distracting.