Who are the main characters of "Romance of the Three Kingdoms"?

Cao Cao, Sima Yi, Liu Bei, Zhuge Liang, and Sun Quan.

Other important characters:

Xun Yu, Xun You, Jia Dang, Guo Jia, Cheng Yu, Xiu Zhicai, Liu Ye, Jiang Ji, Chen Qun, Hua Xin, Zhong Cao, Man Favored, Dong Zhao, Wang Lang, Cui Yan, Mao Jie, Dugi, Tian Chou, Wang Xiu, Yang Xiu, Xin Bi, Yang Fu, Tian Yu, Wang Ch'an, Kuai Yue, Zhang Ji, and Du Raid.

Guan Yu, Zhang Fei, Ma Chao, Huang Zhong, Zhao Yun, Wei Yan, Guan Ping, Zhou Cang, Guan Xing, Zhang Bao, Chen Zhi, Li Yan, Jiang Wei, Liao Hua, Ma Su, Ma Dai, Chen Shi, Lei Tong, Wu Lan, Wang Ping, Ren Kui, Zhang Yi, Ma Zhong, Zhang Nan, Feng Xi, Fu Kyun, Guan Suo.

Characters:

The Romance of the Three Kingdoms contains no fewer than 1,000 named characters (disputed depending on the edition; the Mao text counts about 1,100, but later some counted 1,191, of whom 436 were military generals, 451 civil officials, 128 descendants of the imperial families of the Han Dynasty, Three Kingdoms, and Jin Dynasty, descendants of the empire, empresses, concubines, eunuchs, etc., and 67 Yellow Turban revolts, remote ethnic groups, such as Xianbei and Qiang, eunuchs, and the three religious sects, as well as the three religious sects. (109 people, eunuchs and people of the three religions and all colors).

Among the many complex characters, there are nearly a hundred who are depicted in detail and whose personalities stand out, and about two to three hundred whose portraits are depicted. Mao Zonggang called Cao Cao, Zhu Geliang, and Guan Yu the "Three Greats".