SD1.5 Version Trained by Luma, can only generate Classic Raiden:

"raiden (mortal kombat), brown headwear, jingasa, amulet, beads, glowing eyes, fingerless robe, arm guards, white shirt, long sleeves, blue vestments"

Pony Version can only generate MK1 Raiden:

"raidenmk1, hat, black hair, black eyes, shirt, belt, pants"

For IL Version, now you can use to generate both of them with these prompts:

• raidenclassic, brown headwear, jingasa, amulet, beads, glowing eyes, fingerless robe, arm guards, white shirt, long sleeves, blue vestments

• raidenmk1, hat, black hair, black eyes, shirt, belt, pants

P/s: This is Raiden LoRA, God Of Thunder from Mortal Kombat. Don't get confused with Raiden Shogun, Raiden Mei and Raiden from Metal Gear Solid. In Mortal Kombat 1, he will have a whole new appearance so just leave that for another time.

Now I Must Consult With the Elder Gods