In several shots, the prisoners don't appear in the same tubes during the battle in the time tunnel chamber. For instance, Batman is against a pillar and Mongul misses him with a punch, and the "space pirate" from the arena is seen even with Mongul. When Jonah jumps and fires his gun, the same alien is now even with Jonah, much closer to the time tunnel. When Jonah shoots Mongul, a gray-skinned alien with a movies Alien-type head can be seen to his right. Mongul throws a piece of floor at Jonah and the same alien is seen to Jonah Hex's left. And when Batman is thrown against a tube at floor level, a short bow-legged alien is seen to his right, but a few scene cuts later as Mongul calls them unworthy, the same alien is on the second tier of tubes.