what is the main purpose of le blanc
She's as evil as a woman who controls a shadowy organization that controls Noxus would be.
Read her league judgement, or the garen/kat fanfic "the only truth."
She's the imposter, a shadowy figure who secretly controls all the world's governments partially by manipulating people and partially through strategic assassinations and disguises.
A better question is why a criminal mastermind would join the League of Legends. The consensus I think is that it gives her an alibi for her main persona.
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