Allegro (アレグロ Areguro) is a robot built by Bass.EXE that appears in MegaMan NT Warrior Axess episode 41. He is voiced by Junko Minagawa. He captures NetNavis that win a game at an arcade and forces them to fight each other to the death for his amusement in a game he calls Delete Battle. Mayl Sakurai and Roll.EXE win the game to lure him out and Roll is captured shortly after. They manage to track down Allegro and corner him. He then bursts out crying and Bass, in Kid Grave's body, comes and explains Allegro's origin. He was a robot created by Bass to test Dimensional Areas, but stated that he was disgusted by Allegro's childish mentality and crushed his CPU, killing him.