The concept of sidekicks is extremely deep-rooted in hero-centric worlds, especially within anime, where heroes and their proteges work together in efforts to save society and keep it at peace. Secondary heroes normally work under professional heroes and hold a great place in the overall structure of the hero's society in support and learning to uphold justice with more experienced fighters. With villains challenging professional heroes in any given society, a support network becomes less of a nicety and more of a requirement for maintaining order and augmenting heroes' abilities.