LeBlanc/Trivia

General

LeBlanc's loading screen and in-game icon are the first to not focus the actual champion (they focus her Mimic)
Mimic used to be the only ability (currently Relentless Pursuit) that ended up costing 0 mana when fully-ranked.
LeBlanc, Shaco, and Wukong are the only champions with more than one texture per skin (one for themselves and one for the clone spawned by Shadow of the Rose, Hallucinate, or Decoy).
Her byname LeBlanc means "the white" in French and is grammatically masculine (expected feminine form: *LaBlanche).
The Black Rose might have been inspired by and/or might be referencing the Black Hand.

"For my next trick, I'll make their life bar disappear" resembles "For my next trick , I'll make you disappear" and references stage magic, Kefka from Final Fantasy VI, and/or Mimic's leaked pre-release version (self and allied health bars are invisible to enemies)
"Classic misdirection" and "Lying is, like, ninety-five percent of what I do" might be referencing Archer.
"Surprised to see me?" might be referencing Agent Smith from The Matrix Reloaded.
"Would I lie?" might be referencing Spaceballs.

Her Mimic just made a Poro with bunny ears come out of her hat.
She references stage magicians.
She resembles Zatanna from DC Comics.
Her Tanzanite chroma features a tattoo of the Black Rose around her left leg, from knee to calf.
She shares this theme with The Magnificent Twisted Fate [S|L].

She celebrates Harrowing 2014.
The raven statue on her staff comes to life while she recalls.
She was inspired by The Raven by Edgar Allan Poe.
She resembles Maleficent from Sleeping Beauty.
She shares this theme with Gatekeeper Galio [S|L], Little Devil Teemo [S|L], Underworld Twisted Fate [S|L], and Underworld Wukong [S|L].

In the old lore, Emilia LeBlanc is not an individual but a mantle, with the current one (Evaine) being in charge of the underground society 'The Black Rose', whose members include Elise, Swain, and Vladimir.
- Currently, it's still unknown if the "ageless" Pale Woman, aka Deceiver, had magically extended her life (as Singed had, albeit scientifically), or a long line of enchantresses successively adopted that alias, while keeping lower-ranking members in the dark.
- LeBlanc set the stage for Swain's ascension to Grand General of Noxus.
  - LeBlanc had spearheaded Sion's initial resurrection (assumedly by dispatching Elise to the Shadow Isles, where she first met Vilemaw) and the current one managed to restore his mind with Jarvan IV's blood (the hemomantic ritual was conducted by Vladimir)
    - How she obtained the Exemplar's blood is unknown, but it is suspected his capture and imprisonment was led by Swain and then she herself impersonated the prince to avoid suspicion from Demacia.
LeBlanc is being targeted by Kalista (whom she betrayed specifically is unknown)