While it's unclear which two fighters will return, Armor King did use a purple hue during his DLC release in Tekken 7. Meanwhile, Lei Wulong has been most associated with the color blue ...

The Tekken 8 developers have updated the graphics ... which at this point could be characters like Bob, Armor King, Marduk, Lucky Chloe, Fahkumram, or Julia Chang, to name a few.