[Wobbanaut]

I haven't give a challenge in a while hopefully this is up to mark

Ok SM
Take Mach the Heracross
After catching one in Lostlorn Forest(It should always have counter as a starting move), Now Mach loves the idea of using its opponents energy against it so it must KO 10 trainer Pokemon only using Counter until then it can only use 1 other move(chosen when you catch it) that is equal or less than 60BP taking STAB into account. Mach know that even when he's at low HP he can still win ao teach it Reversal ASAP and KO 2 GL mons with it. Mach is jealous of Flying types so whenever it gets an option to learn a move SE against Flying types it must learn it unless it already has one. Finally Solo 1GL or E4 member pulling of a successful Counter once and yes you have to keep Counter and Reversal in his Movepool forever

Have Fun ^.^