Everything in this picture has at least 140 base attack.
Rampardos is the most fitting pokemon here ngl, it is one of the strongest pokemon physical attack-wise, but he has a fatal flaw, his other stats range from decent to mediocre, which makes him a sitting duck in fights against strong pokemon, this reflects how flandre (at least in fanon) almost always falls into the tactic of "hit it really hard until it dies"