The online names and signatures of the brothers usually reflected their personality traits, character settings, and the plot of the novel. Here are some possible examples: Yaksha: Yaksha is a common online name that usually appears in fantasy, martial arts, and other novels, representing a powerful and evil force. Blood Devil: Blood Devil is a mysterious online name that may imply the darkness and distortion of the character's heart. 3 Sword Saint: Sword Saint was a hero character with a common online name in martial arts novels that represented superb swordsmanship. 4. Battle Emperor: Battle Emperor was a common online name in Douluo Continent and other fantasy novels that represented powerful martial artists. Fanatic: Fanatic is a common online name in fantasy and martial arts novels. It usually represents impulsive, hot-blooded, and fearless spirit. 6. Sky Demon: Sky Demon is a nefarious name that may imply the character's inner distortion and evil. Condor God: Condor God is a common online name in martial arts novels, which usually represents handsome, unrestrained, and powerful characters. 8. Magician: Magician was a common online name in the magic world that represented a profession that was good at using magic. Swordsman: Swordsman is a common online name in martial arts novels that represents a character who is good at using swords. Soul Master: Soul Master was a common online name in fantasy and game worlds, which usually represented a profession with a soul. These are just some possible examples. The specific online name and signature will vary according to the plot and character setting of the novel.