Theory Gantz is not using teleportation.

Amnesiac · Apr 1, 2009

Gantz556 said:
Everytime that people are "teleported", they are actually being made with new copies. If my guess is correct, we have already seen hundreds of Kei Kurono throughout the manga!

We might find out in the upcoming chapters if my crazy theory is correct.

Your theory has already been proved wrong countless times through the manga.

Chapter 4: while the yakuza guy's torso is outside, his legs run in the room:

If the Yakuza appearing outside was a copy, then the legs inside the room would have no torso and head to control them into running.

More examples...

Chapter 5: brainless Katou speaking:

Again chapter 5: with his head outside already, Kurono feels out the room in search for his suit and gun:

On a more recent instance, chapter 295: american guy speaks even though his brain is already in the room:

As I said, there are countless examples. Just look at the beginning and end of every mission.