Boneless

The Boneless are a fictional alien race featured in the 2005 Doctor Who revival series. They appeared in the ninth episode of series eight, which was titled "Flatline".

The Boneless are a race of two-dimensional creatures who hail from an alternate dimension. Upon discovering the existence of a three-dimensional world, they became intrigued and attempted to bridge the gap between a 2-D existence and a 3-D one. Unfortunately, their efforts resulted in the deaths of several residents of Bristol, all of whom died after being converted into a two-dimensional images of their previous selves. The Twelfth Doctor and Clara Oswald fought up against these creatures, and the Doctor succeeded in banishing them. It was the Doctor who dubbed them The Boneless.