What would be the best nature for a Zangoose? Should I focus on Attack, Speed, etc? I have one on level 100, but it wasn't EV trained, so I want to try again.
I`d suggest Jolly instead of adamant so it can be much faster than others so it can sweep teams(Remember, the point of a sweeper is to kill before they kill you.)
Yeh adamant, this isn't exactly the same but my Psyther (scyther) is adamant and still has 296 speed which I think is pretty damn good. so put 252 EVs in speed and you'll be fine.