some other quotes worth mentioning
"The plasma gun and blades and such stick out from the suits, which could be dangerous during the fight performances," says Dashnaw. "So, Greg designed them so they could come off the suits when necessary and visual effects adds them back in during post."
Weaponry is a big part of the "Predator" universe, defining both the human and alien hunters. Royce carries a machete that is almost identical to the one wielded by Arnold Schwarzenegger's Dutch in the first movie - it's even made by the same knife maker, Jack Crane. The weapons team also produced skin-pullers, spears, axes, traps, armor, and a shiv for Stans. Says Joyner: "Predators are about their hunting skill. They test their ability against other species. So, it's not about overpowering a species with better weapons or better technology. They're purists. We're trying to stay true to the legacy of the original film."
"The character of Edwin was the last one that was cast, because it was really hard," comments Avellán. "You have to find an actor who can sell that you don't know why he's here on this planet. Topher Grace is that all-American boy. He's a really great choice because audiences don't see him as a threat."