There have been times where a character design alone hooks me, Darth Maul, but with the Predators of late, Wolf's the only one that's come close to swaying me on looks alone, what sealed for me was seeing him in action though. A difference with Darth Maul as example for me would be that there were enough photos and trailer clips showing some of what he did, but with Wolf, you really didn't get any clues as to what he was capable of before seeing the movie, you just saw how he looked. One thing that swayed me with Maul was the first double-bladed saber, with Wolf, the whip was a cool feature, and the twin canons, those we saw in the trailer. I find the things I like about characters don't get shown off much in trailers for thes Alien and Predator films, they really play the creatures low key, though I'm sure even P1 and P2 did that in their day, I only ever saw them well after they'd been on home video.