Latter-Day Pantheon

The Latter-Day Pantheon were a group of aliens encountered by the First Doctor in 1965 New York City. Their true names are unknown.

Nature and abilities
The Latter-Day Pantheon were completely controlled by the beliefs of the humans around them. They had no natural powers or personalities, but were instead shaped by what people believed they should be like.

Even their true form (either smoke or a puddles) might be what people expected of them. When first discovered, the Latter-Day Pantheon were believed to be gods, so that's what they became.

History
At least two groups of these aliens came to Earth in 1965. Though only one survived from the crash-landing in London, five survived the crash in New York City. They were discovered by Alexander Lullington-Smythe who tried to take advantage of their powers, claiming they were gods.

The problem was that the human inhabitants of New York City had far too many conflicting beliefs, meaning that the Latter-Day Pantheon had trouble deciding which ideas to follow. Eventually, they decided to end the Vietnam War, but they were stopped by the US Army before they could finish with their plan, the Doctor driving them off by having the army drop a dud bomb on them; although the bomb wouldn't actually hurt anyone, the gods' remaining followers believed that it could hurt the Gods, and so it drove them off. (PDA: Salvation)