Semi-Perfect Cell is the intermediate form of the bio-engineered android Cell in the anime series Dragon Ball Z. Achieved after absorbing Android 17, this form combines Cell's intelligence with a significant increase in strength and power. Semi-Perfect Cell is ruthless and arrogant, seeking to become even more powerful by absorbing Android 18 and reaching his final form. He serves as a major antagonist during the Android and Cell sagas, challenging the Z Fighters with his overwhelming abilities and relentless ambition.