What is chrollo spider tattoo?

Chrollo Lucilfer, the leader of the Phantom Troupe in the anime and manga series "Hunter x Hunter," has a spider tattoo on his forehead. The spider tattoo is the mark of the Phantom Troupe, which is a group of thieves and murderers who use this symbol to signal their allegiance to the group. The design of the tattoo consists of a stylized spider with eight legs and a web background. The spider symbolizes the group's predatory nature, while the web suggests their interconnectedness and the intricacy of their relationships. In the story, the tattoo is considered a badge of honor, and members of the Phantom Troupe are fiercely loyal to the group and its leader.