Silver's Magnemite was pretty damn annoying with the Thunder Wave/Supersonic shit.
As for Morty, his Gengar was too fast and its Shadow Ball hit too hard, so after losing once I went all out (two X Sp. Def, one X Special and one X Speed, plus two hyper potions).
>>36666178I can't say for sure, but it's so weak that sometimes even the tall grass shitmons require 2 hits to die, despite being like 15 levels lower.