Specifically, they are shape-shifters who have become permanently trapped in these Earth creature forms.

Thus "only" 300,000 men were permanently trapped, whether captured or killed.

If I were ever trapped in that place permanently, my life span could be measured in minutes.

If this happens you can make a suicidal leap and start the level again - you're never permanently trapped on a screen that can't be completed.

However, unless the rope gun is collected before the player lands the barrel on the island, the player gets permanently trapped, and must start over.

If we were permanently trapped on this world, that wouldn't be necessary, now would it?

Almost Zelig-like in the succeeding scenes, he continues to fit in without getting permanently trapped.

At first he is permanently trapped in this form, but Vandervecken supplies him with a ring that allows him to become human again.

It occurred to him that he might in fact be trapped permanently, but he thought it highly unlikely.

It seemed Tachyon was permanently trapped not only upon Earth, but in the body of a pregnant teenage girl.