It is fun to work with! Here are some images to give you an idea to the style: 1 2 3. He'll also be eating their souls (who can resist a shiny right??)

o7 He will mainly do it on the streets. Diablo might go into one or two buildings to chase after his prey, but otherwise it's whoever has the bad luck to run into him. Also there would be huge structural damage to those buildings since he is quite big :)