I take it this concept is not asking about Special Attack or Special Defense, but rather the physical brands. I'm going to be answering this one based on the Pokémon I use most frequently when trying to take advantage of those various stats asked about... so, in order:
1) With regard to Attack, Metagross is the Pokémon for me. I've used its highly physical moveset to screw up a Mewtwo whose owner (a mouthy acquaintance of mine) claimed was nigh unbeatable. Rocked his world in three turns with this guy and I've never regretted breeding him.
2) I love my Shuckle for Defense. It's okay, you can laugh, until his Gyro Ball screws you over.
3) Speed is a tough one. I tend to prefer Pokémon who DON'T have high Speed; I like mine with high HP and Defense because I build them for the long haul, and rarely does my team get the first attack. But of my fastest Pokémon, I favor Crobat the most.