The question refers to a personality from the Dragon Ball franchise. This character is a creation of Dr. Gero, an excellent however malevolent scientist. The synthetic being is designated as Android 20, but in addition is Dr. Gero himself, having transferred his consciousness into an android physique for immortality and enhanced energy.
The importance lies within the character’s position as a major antagonist within the Android Saga of Dragon Ball Z. Android 20 embodies the pursuit of revenge and technological development at any price. His creation and the following activation of different androids launched a formidable risk to Earth’s defenders, pushing them to surpass their earlier limits.