Riddick didn't feel anything as he walked through the portal. He had expected to feel some sensation from transferring from one place to another only it had been no more noticeable than walking through a regular doorway. The lack of interesting stimuli garnered a snort from him. Valkyrie had likely already known there would be no noticeable change as a result of traversing the distance. He wouldn't be surprised if she was familiar with portals of all kinds.
"Didn't feel anything. Expected something. Stupid, huh? You done this a lot?"
Predators could usually sense prey as well as other predators in the environment around them; Riddick was no exception. He knew something was watching them. The feeling of being observed was unmistakable. His sense of smell told him it had once been alive and healthy though that might not be the case now. The concept of the undead wandering around wasn't something Riddick had ever given much credit.
"Something is watching us. I think it wants to play. Are we in the mood for a game or do we want to pass to find something better?"