While it is claimed that the Humanzee was never created, there have been attempts. Some success has happened with it from time to time. However, nothing concrete has occurred outside of theoretical settings (although some claim they have been developed). Gene Editing could change all of that soon, however. On a few occasions, there have been legal issues. In one instance, a laboratory was stopped from furthering their studies into a human/chimp hybrid.
[Image via The Irish Sun]They claimed they were not planning to make the hybrid, but obviously, this was a lie. They had every intention to make them if possible. Hominids have mated in the past to create essentially a hybrid species. It is thought that early Homosapiens certainly mated with the Neandertal. However, due to the evolutionary space that humans are from Chimps, a successful hybrid is unlikely. This is why gene editing would be needed to help this along if we indeed wanted to attempt such a thing.