The theory that Earth is a breeding ground for alien hybrids and humans may just be sperm and egg donors has captivated the imaginations of many, leading to a fascinating blend of speculative fiction, historical accounts, and pseudoscientific claims. Proponents of this theory suggest that extraterrestrial beings have been visiting Earth for centuries, conducting genetic experiments to create hybrid beings that combine human and alien traits. While mainstream science has not found credible evidence to support these claims, various authors, historians, and researchers have presented intriguing arguments and anecdotal evidence to pose this theory.