I am trying to find higher resolution images of some of the monsters than the ones that are posted on the wiki. Do you know if there is a way? I'm trying to get something that is computer wallpaper material but have had no luck...Thanks for any insight!
Hm, well, the full portraits we have on this wiki are the highest in-game resolution monster pics you can get. I'd suggest looking through the backlogs of official PR sources like the Facebook page or the official Twitter - they've posted a number of high-res concept arts of newly-announced monsters. Of course, you're out of luck if they've never posted what you're looking for.
If you really need something specific, maybe try asking GungHo reps on FB nicely :)