Nephew was under the influence of an alien entity called House.

Is it at times something of an alien entity in the borough that gave it a name?

No longer an alien entity, the Invaders can now absorb ordinary humans into their ranks.

One by one, they would be incorporated into the alien entity that was the Face.

Search his mind for yourselves," the alien entity invited the others.

During the third season the black oil was introduced, an alien entity that invaded bodies and made them into living hosts.

The alien entity lay on the floor in an apparently weakened state, but Picard wasn't buying it.

I could not realize that I was host to an alien entity.

He had now been assigned to work on the problem of communication with the alien entities.

No man could be truthful about his own race, talking to an alien entity.