Many tiers have this and I believe that we should as well. I will begin with this list as being empty and you may choose how to tier a certain pokemon. Remember: "X Should Be Y Tier" is not allowed. Instead "X Should Be Y Tier+Good Arguement / Explanation." S-Rank: Reserved for Pokemon that simply put, are really good at what they do. These Pokemon are able to function extremely well without much support needed. In addition, they can still wreak havoc even when the opposing team has a counter for it. For defensive Pokemon, these are really hard to take down and can get around counters a good percentage of the time. Garchomp Mega Kangaskhan Mega Tyranitar Tyranitar Aegislash A-Rank: Reserved for Pokemon that are not as great at what they do as those in S-Rank. This could be due to a flaw like lower damage output or a crippling weakness. For defensive Pokemon, these Pokemon are still very good but are may be weak to a common type or pretty poor movepool. Additionally, these Pokemon function better with support but can still function well without it. Amoonguss Mega Charizard Y Rotom-W Rotom-H Talonflame Salamence Mega Mawile Mega Gardevoir Mega Manectric Mega Gyarados Venusaur Mega Gengar B-Rank: Reserved for Pokemon that are outclassed by those in A & S-Rank but given good support, can do well, especially against teams that are not completely prepared for it. For defensive Pokemon, they have a main flaw or are just weaker stat and typing wise that stops it from walling most threats and Pokemon. Scrafty Meowstic Ferrothorn Gyarados Mega Venusaur Azumarill Chandelure Politoed Mamoswine Bisharp Gengar Mienshao C-Rank: Reserved for Pokemon that can be effective given a certain situation but otherwise will fall behind compared to higher ranked Pokemon. Other than this, the opponents team needs to be completely unable to deal with it for it to become a threat. Manectric D-Rank: Reserved for Pokemon that are gimmicky and may have some strategy that will succeed a very small percentage of the time. Simply put, these Pokemon may have a small role but are outclassed and are useless most of the time. Better off using other options. Vivillon E-Rank: Dont even bother unless you just want to have fun and you have a favorite Pokemon here. In other words, there is next to no chance this thing will carry its weight.