Firstly, Cheong-san was bitten by Gwi-na, a hambie, during their fight in episode 11.
This means thatCheong-san could have already transformed into a hambie himself, which would explain his survival.
That said, Cheong-sans return may not be all good news, especially if he did become a hambie.
Nam-ra herself almost attacked Su-hyeok and nearly killed On-jo.
Therefore,if Cheong-san is a hambie now, he may have become too dangerous.
Whether someone will become a hambie or a zombie also has to do with who is infecting them.
Custom image by Yailin Chacon
All of Us Are Deadseason 1 will reportedly start filming in 2025.
It would be a dark twist on his character.
Nam-ra used that time to learn how to control the transformation, although we didnt see how it happened.
Custom image by Yailin Chacon
She most likely had help from other hambies.
In theNow At Our Schoolwebtoon on whichAll of Us Are Deadis based, Nam-ras story ends slightly differently.
While she does disappear for a couple of months, she doesnt necessarily learn how to control the transformation.
The webtoon ends with the military realizing that Nam-ra is the key to a cure.
This adds to the theory that Cheong-san will return as an asymptomatic zombie too.
The zombie outbreak inAll of Us Are Deadstarted precisely becauseDr.
Either way,All of Us Are Deadneeds new villains.
How Cheong-san will fit into that story is difficult to say.
Hopefully, Cheong-sans return will live up to the expectations without ruining the end of season 1.
Custom image by Yailin Chacon