Piplup is great.Piplup may be weak with a گھاس type but it's super effective with drill peck and peck.Piplup is super effective with آگ کے, آگ types too.As for electric types,you have to envolve piplup to learn dig.Also when آپ envolve it, آپ can learn گھاس knot to beat water types so easily!Don't forget it can also envole to Emploen and learn hydro cannon!And don't for get metal claw either!Piplup is also very strong with it's torrent ability.Piplup is cute and when it envoles to Emploen,it looks tough and it may be too!Also,if آپ had a piplup, it can learn surf and waterfall when it envoles and then آپ could meet the champion!Remember,first is a bug trainer so آپ can beat with flying type moves like peck یا drill peck.Next is ground which آپ can use گھاس knot.Third is kind of آگ کے, آگ so Piplup can beat them easily with a water type move.Last, is a phychic type but I have no advice.Finally,the chamion's strongest pokemon is Milotic so آپ can use گھاس knot!