In the series "Avatar: The Last Airbender," the concept of power and its corrupting influence is explored through various characters and storylines. For example, characters like Fire Lord Ozai and Princess Azula demonstrate how an excessive lust for power can lead to tyranny, manipulation, and ultimately, self-destruction. On the other hand, characters like Aang and Zuko showcase how individuals can use their power for good, despite facing internal struggles and external pressures. Throughout the series, the balance between power, responsibility, and morality is a central theme that is examined through character development and plot dynamics.