Mr. Zombie is a Manga/Manhwa/Manhua in english language, Comedy series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

1000 years ago, the MC became a normal zombie in the apocalypse. In order to survive the constant hunting of humans, he continued to train himself until he became immensely powerful. After 1000 years passed, he is now ready to enter human society again.