Xanxus is the current leader of the Varia, Vongola Ninth's adopted son, and was the main antagonist of the Varia Arc. During the Varia Arc, he and Tsuna battle for the Sky Vongola Ring and the position of the 10th Vongola Boss. Later, in the Future Arc, he remains the leader of the Varia and leads a raid against the Millefiore, taking their Headquarters. He battles against one of the Fake Funeral Wreaths as well and easily wins, showing that he has grown much stronger in the future.