Building a team!
Now for teambuilding. Teambuilding isn't easy to explain, but I'll try my best. I assign each one of my 6 slots a role. I follow a few rules when I make my teams. The first is that I have a defensive core. What this means is I have at least 1 physical wall and at least 1 special wall in my team. By doing this, you can cover up a lot of your weaknesses by adding key resistances. So, I'm just gonna build a random team from the top of my head using all the info we have gathered so far.
Let's start off with our physical wall. I'm looking for something with a high defense stat, at very least an average hp stat, along with the ability to wall key threats and take them out of the game. So we need to identify physical attackers which are going to cause serious damage. When looking at the A section of the tier list, we find that aerodactyl, dragonite, arcanine and gyarados are the big physical threats.
Pick pokemon with high defense stats, ev them correctly in hp and defense and see how they stack up. We know that it is likely when competitive battling arrives that gyarados, due to his easy availability is going to be used a lot, so let's take him as an example and focus on walling him. When we look at gyarados on this page (
https://pokefind.co/wiki/index0bad.php), it tells us a few things. One is his 4x weakness to electric and 2x weakness to rock. This could be useful if we manage to find a wall who can dish out electric or rock damage while not getting hit hard from gyarados' Aqua Tail and Ice Fang (His main physical attacks in this moveset).
The other crucial thing here is that gyarados is more bulky than you may expect. With a 95 hp stat and 100 special defense, he can certainly take one special hit and then hit back. This shortens the search for a physical wall, because it means that we need to target it's average 79 defense as a weak point. So we want a high defense, but also decent when it comes to physical attack or something which can take advantage of those electric/rock weaknesses.