Constantly wondering why Kwak Jekang's hair color was white (grey?), and I just realized why.
Because he is a Labrat.
In rodent studies, typically white-furred albino rats such as the Sprague-Dawley (SD) rats or Wister rats are widely used for behavioral (both fear & reward-based) experiments. These strains of rats are generally sociable & docile, with low susceptibility to spontaneous tumors or mutation; basically, they are healthy with less complications.
On the other hand, black-coated mice strains such as C57BL/6J are most widely used & they are the standardized one. You can see so many transgenic (genetically modified) mice of that particular strain (almost they are predominantly preferred in the behavioral studies, honestly) due to the high genetic stability. Behavior-wise (phenotype), they are less sociable. They bite when you touch them.
Kwak fits the traits of the former, a rat. His canon depiction as a DER wiki character was "cheerful & amicable". Even though he's caught up in many darknesses, he never got severely contaminated. He is (so far) intact, physically. Also, he has green eyes, a complementary color of red.
Kwak Jekang truly is a rat.
(CW: rat & mouse pictures)
OOOH OP THIS IS AMAZING I NEVER THOUGHT OF IT THAT WAY
(Possible spoiler below)
Also do you think it’s also to match the hair color of J3?
















