Android 17 is a fictional character from the Dragon Ball series created by Akira Toriyama. He is a cyborg, originally introduced as an antagonist in the Android Saga of the series. Android 17 is known for his calm demeanor, exceptional fighting skills, and ability to regenerate, making him a formidable opponent. In the series, he is the twin brother of Android 18 and was created by the villain Dr. Gero to destroy the protagonist, Goku. Over time, Android 17 evolves from a villain to a hero, playing a significant role in the Tournament of Power arc, where he showcases his strength and strategic abilities.