What is Zhu Gui's character in Water Margin?

Personality: Talk about Jianghu morality, kill people without blinking an eye, but be kind-hearted and meticulous.

Zhu Gui was the first person to open a black shop in Liangshanpo. In the name of opening a shop under Liangshan Mountain, he specializes in killing people and stealing goods. He met single guests passing by, and most of the rich ones were knocked over by him and died by his knife. The fat of the deceased was boiled into oil for lighting, and the lean meat was made into bacon. This is the cruel side of Zhu Gui.

Zhu Gui's nickname is "Sudden Dry Land Method", which means crocodile, implying Zhu Gui's cruelty. Crocodile's ferocity depends on water, so it lost a lot of prestige in dry land. Said he was unruly in dry land, suggesting Zhu Guishan's side.

Extended information Zhu Gui, a native of Yishui County, Yizhou City. Zhu Fu's brother, one of the veterans of Liangshan, met Zhu Gui in a hotel at the foot of Liangshan when Lin rushed to Liangshan. Zhu Gui is the eyes and ears of Wang Lun in Liangshan. He is called "disobedient to the law in dry land" in Jianghu. Zhu Gui, in the name of opening a hotel, specializes in inquiring about business news.

Anyone who goes to Liangshan will shoot roaring arrows at the harbor across the lake, and a clipper will come across. After Wang Lun was killed by Lin Chong, Zhu Gui still opened a hotel for Liangshan, and was in charge of Liangshan Hotel with Du Xing, a grimace. When Liangshan got together, it ranked 92nd.

References:

Baidu Encyclopedia-Zhu Gui