mutants: infected people who still conscious as human and has special ability
rotten: infected people that change like common zombies, but they can think and talk among their peers too.
Won is half mutant because he inherited his mom's ability to speak telepathy and the rottens' saw him as pitiful little child, and his body strength was inhuman..
Nameless one got ability like a doctor, he thinks things through and said he thinks the mutants exist to lead the rottens' in the new era, so he actively working towards his own propaganda. That is making humans (Seonho) produced more rottens/mutant babies.
Meanwhile other rottens' we aware of, the baby killer woman and haesoo only focused on what they want personally. The woman wants to keep eating baby and haesoo wants seonho, his ability also centered around seonho. he can smell only seonho even from miles away, and he has tentacles to catch him.
Ok someone please spoil the plot for me!! What's up with the zombie hybrids? From what I gather the author likes to torture all of us. And the protagonist has some milkshakes that bring all the psycho to the yard .