Tyranitarphantom: Remember that Shuckle you receive on Cianwood city? Actually, it is a retired General Shuckle from the bug Wars...
When you receive it, it decides that he wants to have a sun, so, you got make a male Shuckle Kid, named... PVTShuckle! PVTShuckle decides to follow his fathers steps against its enemies.
His patent have some up-grade after a couple of levels.
1-10 Private Shuckle: He can't hit any bug types, he is just to young! And needs to observate his enemies actions. So, when encountering a bug, PVT Shuckle must go away
11-30 Sergeant Shuckle(rename it to SGTShuckle): Now that he knows it's enemies, SGT Shuckle can FIGHT, and he wants to be the best Shuckle EVER!!!!! So, from now SGT Shuckle will fight every single bug he finds, besides, of course, he is Shuckle friends.
31-50 First Sergeant Shuckle(rename it to 1SGShuckle): After showing to the Shuckle who is the best, 1SGShuckle, with he new up-grade, noticed that Shuckles can't win the Bug Wars just defending, so, 1SG Shuckle decided to make have some up-grades on his own fire power!!! Knowing that, as a Shuckle, he is not the best attacking, 1SG Shuckle decides to make alliances with the best attacking types to win this war! Fire and Rock...actually, this fucking birds are on the enemy side, and, deffensivelly, the worse happened! The steel guys decided to join causes with the other bugs...so, 1SG must fight every Flying, Bug and Steel types he encounters, and can't fight against his allies(Fire and Rock)
51-100: Sergeant Major of the Army Shuckle(rename it SMAShuckle) SMAShuckle can win the War, and for this, he got an up-grade. Now he just make orders, he don't need to fight against his enemies anymore, this is for younger Shuckles. The strategy is his part. And the perfect moment is against the E4!. Shuckle must solo Bugsy!!!!!!(he can have some help from it's allies tough, but just Rock or Fire Type Mons, but just when SMAShuckle stars to have problems(red life)). He still cannot fight agains his allies.
After Winning the War, SMAShuckle decided to retire, becoming RTDShuckle(retired), an the only thing he can't do is fighting Fire and Rock types.
I don't think this is clear: It can NEVER in his entire life, fight a Shuckle.
Edit2: Man, the internet trolled me. Bugsy is a gym leader ¬¬. So, the perfect Strategy is against Lance, because Lance have a crush to bug types...(damn it, the perfect history destroyed ¬¬)
Hope you have fun!