Hello. I don't know if this will be of any use to anyone, and I know that this information in general is quite old news, but I'm posting a complete text transcript of all the hidden reversed messages given by Netherealm and Chaosrealm citizens in Deception's Konquest mode. I had been looking for a complete text transcript myself of all the backwards messages, but was unable to find anything. For something that seems quite common knowledge, I was surprised to see that there wasn't any easily available list of all the hidden messages. So, I decided to go through the sound files and make a complete transcript myself. If there is a list somewhere, then I apologize for reposting content (And I would like to know where this list may be found!); if not, then without further ado:

Male Backwards Speech:
Deception story-related:
"All of existence is merely the dreams of the One Being."
"The realms are, in fact, the shattered consciousness of a singular being."
"The One Being uses the ambition of creatures like Shao Kahn and Onaga to merge itself back together."
"The Void is a place beyond realms where the Elder Gods dwell."
"The Elder Gods do not directly interfere in the affairs of the realms for fear that they may awaken the One Being."
"Onaga was poisoned and slain by his advisor, Shao Kahn."
"The Dragon King watched from beyond death as events unfolded."
"Onaga took possession of Reptile's body in Outworld before stealing the Kamidogu and claiming Quan Chi's amulet for himself."
"Did Shang Tsung and Quan Chi survive Raiden's ethereal blast? Time will tell."
"Raiden will return from annihilation, though he will not be as he once was."
"The Dragon King revived the slain heroes who confronted the deadly alliance."
"The Dragon King will rule supreme."
"Onaga seeks information in Edenia. Tanya will provide it for him."
"If all six Kamidogu are fused into one, they will become a most powerful weapon."

Game-related:
"Good is any act that promotes the separation of the realms. Evil is any act of consolidation."
"The forces of good and evil balance each other through the act of combat."
"In their purest form, the Elder Gods resemble the dragon symbol of the Mortal Kombat tournament."
"In the beginning days, sorcerers were commanded by the Elder Gods to construct the many portals that connect the realms."
"The Mortal Kombat tournament was created to allow Shao Kahn to earn the right to merge other realms with Outworld."
"The Gods do not truly die; they merely dissipate until they can be reformed."
"There are many realms."
"No warrior ever truly dies in Mortal Kombat."
"Shao Kahn, Lucifer, and Raiden are of the same race of beings."
"Reiko is not Shao Kahn, though sometimes, he secretly wears the emperor's helmet."
"It is a little known fact that Ermac is short for Error Macro."
"Rain is purple, get it?"
"It may be that Frost is merely hibernating."
"Will Hsu Hao return from the dead? Uhh... probably not."
"Sub-Zero's ancestral armor responds to him on a spiritual level."
"The body of Liu Kang has been reanimated. It has wrought destruction upon his Shaolin brothers."
"The spirit of Liu Kang will live on."
"Find Liu Kang in Outworld and inform him of Tanya's treachery for a different reward."
"You are being deceived."
"Beware, Damashi is the Dragon King."

Other:
"Parents of the world, there is no satanic content hidden in the backwards speech in Mortal Kombat."
"Drink milk. Get plenty of sleep. Listen to your parents. Do your homework."
"Play Mortal Kombat with a friend in Vietnam."
"You rock the house like Midway."
"Mortal Kombat. Toasty. Frosty. Finish Him. Fatality. Flawless Victory."
"There's a little bit of me in everyone."
"I am talking backwards. Spooky, isn't it?"
"If you have decoded this, you have way too much time on your hands, my friend.
"Ed Boon 490. Ed Boon 490. Ed Boon 490." (Different voice)
"It is said that John Vogel is a genius."

Female Backwards Speech (Note - A few sayings were identical to the male's, so they have been omitted):
Deception story-related:
"Long ago, the Elder Gods shattered the One Being with the six Kamidogu."
"The Dragon King's army was undefeatable due to his ability to revive his troops from death."
"Each Kamidogu can only be used by one individual, but Onaga seeks to fuse them all into one so that he may utilize their combined power."
"To defeat the Dragon King, you must take from him that which makes him strong."
"Scorpion is the true Champion of the Elder Gods."

Game-related:
"Give Reiko's message to the Edenian official for a different reward."
"For many years the Shokan and Centuars were rivals, both seeking Shao Kahn's favor."
"Smoke's nanotech systems are transforming his shape."
"Perhaps you did not know this, but Noob Saibot spells something backwards."
"Lucifer once ruled the Netherealm, until Shinnok defeated him.""

Other:
"Mortal Kombat is crazy with a 'K'."
"This video games is dedicated to our homies."
"And now it's time for another exciting episode of What You Get."
"John Vogel is a genius."

I'm pretty sure this is everything. If I have missed any, please tell me.