Konrad (1985)

Konrad is a perfect instant child "born" in a factory at age 8. Due to a mistake in the factory's computer, Konrad is delivered to Bertie Bartolotti, a woman whose life and appearance are in a constant state of disarray. Konrad arrives looking like a gremlin, but when Bertie pours a nutrient solution over his head he changes into a fully-developed, perfect 8-year-old child. The factory realizes a mistake was made, and recalls Konrad, but he does not want to leave his new family and friends.