^ you cant catch it w/ a mean look. none of the arena trappers or shadow taggers learn block or mean look. first place, there is nowhere special, but a lot of people route 1 and between nugget bridge and cerulean cave is a good spot. once you see it once, just go to any grassy area, save check the dex. if its not in your route, turn off the game and back on, check the dex again, keep doing this until its in your route, amd then just run around UNTILL you see him, its not always the first one you see.