Rain - Lightning in a bottle.

Reptile - Dinosaur.

Scorpion- Forest Demon.

Sub zero- White Dragon.

Liu Kang- Dragon Warrior.

Sonya blade- Air Force .

Johnny cage- Wrestler.

In one of his variations, Rain could of had a move called (the) Rain Drop. Think Ermac's elbow dropping slam, in MKD.

Skarlet - Blood test.

Raiden - God said let there be light(ning).

Noob Saibot - Beat them black and blue.

Gem related with MKDA Krypt currency in mind and unliterally.

Sub-Zero - Way of the Sapphire.

Scorpion - Way of the Citrine.

Rain - Way of the Amethyst.

Noob Saibot - Way of the Onyx.

Reptile/Jade - Way of the Emerald (Jade is Jade).

Ermac - Way of the Jasper/Emerald.

Khameleon - Way of the Opal.

Frost - Way of the Topaz.

(Nitara?)

Shinnok - Bone idol.

Khrome - Lumen dazzle emitter.

Rain - Salty water.

(As in attitude)

Raiden - Taken Mortal Kombat by storm.

Nitara - Making the blood boil.

Geras - Dust devil.