Lu Meng

Lu Meng was a warrior and strategist of Wu. At first, he was considered merely an average fighter of low intelligence, but he dutifully studied and learned and later became the supreme commander of Wu's forces. He lead Wu to victory at Fan Castle, where he captured Guan Yu and Jing province. After Guan Yu's death, his spirit possesed Lu Meng and made him kill himself, after which his apprentice, Lu Xun, carried on as commander.

Weapons
Without letting Guan Yu retreat or escape, defeat all the generals and officers, including the ambushes and reinforcements. (NOTE: At the beginning, Liao Hua will be sent to get more help so let him go. Also, make sure you take out the gate captains within the castle so you won't have to play fast foot. Finally, do not forget to re-enter the castle some time later on to get more ambushes parties to appear.)
 * Ultimate Weapon: White Tiger
 * Power: 54
 * How to get it: Battle of Mai Castle