"Fired up and ready to set the world on fire." -Brandcrank
"All the world, on my wings." -Aniviashe
"If you're buying, I'm on the case." -GraglinWhat're the best that you can come up with?
######Hint: The answer is always Mundo.
Edit: bonus points if you also combine their abilities and come up with something that fits the quote.
"A guardian is always prepared to be boarded " Galioplank
"Mundo, a wise choice" - Dr. Mundodinger
"Only you can hear me Captain Teemo" - Sonatan
They will regret opposing MUNDO!
"Pleased to HRRRRGHGHGH!" ~ Lulu'Sai
"Welcome to the depths." ~ Dravilus
"Everybody dies. Ok." ~ Lucmus
"A new moon has arrived." ~ Dia...na?
"They are at your service!" ~ Shyrelia
"Eternal life... Your emperor has returned!" - Urgazir
"Dead man is yours." - Gravyi
"Let's get in for a true display of skill!" - Rumbreal
Never said they have to be a sinlge quote. But I threw twoin there, see if you can guess where they are.
DEMACIA!!! 
Yea, he does say that a lot.
"... other robots find that to be appropriately funny." 
(robot) HaHaHaHaHaHaHa
"what does it mean?"
"...no, I am not happy to see you."
"Do you wanna play?" 
"Lets be friends forever."
(jurassic) NomNomNom You belong in a museum.
and of course....
Not Draven. Draaaaaven.
"Captain Mundo on duty!!!!"
EDIT: Look who's reading... hint: I'm not!
Live and die by the Mundo
Veigani
"Know that if the tables are turned, Trust nothing but your strength!"
Well... Combining their R or W would definitely be pretty damn strong... sooo...
Sorakarina / Kataraka
"Let me solve everything"
Combine their E and R, and she will literally solve everything. Silence the enemy for safe ults, ult to heal allies and kill enemies. OP as heck, I say!
Fiorner / Skarnora
"I long for ugly death."
Fiora's Q now gets less cooldown through basic attacks. She will definitely get her ugly death now.
Did I do it right? I think I did, but I am doubtful
Trust nothing but... I'll bury the world in ice!
Lissani? 
Kassakaiser/Mordedin.
"The balance of power...shall bring great suffering."
This'll be a League of Draven! - Driggs
"Embrace the ugly death!" -Nocner
"Ugly death awaits!" -Skarzhar
"Change is always by my side." -Kha'Suo
"The unseen Temmo is the deadliest." -Zemo
"Everybody dies. Some just need a little MUNDO!" -Dr. Ludo
Violence solves ugly death.
Knowledge though...Mundo.
Know, that if the tables were turned, I would show you Agony, Ectasy, Peace.
My heart and sword, always for Shurima.
To be fair you could do anyone's with azir's.
"I thought you'd never go." - Rymumu
"My heart and soul always for wise choice!" - Garendinger
"My heart and soul always OK!" - Garmus
"I thought you'd never OK!" - Amus
"Tactical decision, Summoner! What masterpiece shall we play today?" - Luna
"The tempest is a worthy opponent!" - Jannora
"This battle solves everything!" - Aarina
"Rules are made to be broken! Like a blast!" - Jings
