Vala's species is a sexuate humanoid species looking much like humans apart from the shape of their upper skull that may have developed space travel or have been in contact with species which had as of the 21st century. They remain somewhat obscure to the rest of the interstellar community. They have telekynetic abilities which enable them to stop other individual's heart. They can also link their powers to that of other psionicists.
Source: Gerry Anderson, Space Precinct, Epsiode Enforcer