Black sheep

The phrase "Black sheep" commonly refers to a person who is considered different, eccentric, or deviates from the expected norms or values of a group or family. It implies that the person stands out or is seen as an oddity or outcast in comparison to the rest of their group or family members. The phrase originated from the fact that black sheep, due to their rarity, were often considered less valuable than white sheep in the context of the wool industry.