Avalon of Disaster is a Manga/Manhwa/Manhua in english language, Adventure 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

The main character that loves the MMORPG Dunex more than anyone, in exchange for clearing the event he was transported inside the game world. However, he was transported as a fat mob villain.