Lore hints from intro dialogue (may contain spoilers)

[kabelfritz]

reptile and havik reveal the origin of havik

Spoiler

he is dairou

raiden and smoke discuss hanzo

Spoiler

apparently he is a younger member of the lin kuei and "Not ready yet" maybe takeda?

bring em on, there must be tons more

 

[kabelfritz]

Kai is apparently an elder at the Wu Shi Temple, i think its from Raiden/Kung Lao dialogue

 

[Art Lean]

I've sadly barely heard any of them. They're frustratingly absent in 90% of the single player modes; invasions, towers and storymode, so I'd only hear them if I play a local vs match against the cpu.

 

[Dankster Morgan]

Takeda is Takeda Takahashi according to the Kombat pack description.