Character matchup (SSBB)

Character Matchups
A character matchup or a counter is a prediction on how two characters would fare against eachother in tournament settings. For example, the matchup between Metaknight and Peach favors Metaknight. This list does not mean that a character has no chance of beating another chracter in any match, or that players cannot beat a certain character while using any certain character. In addition, this chart does not directly affect tier rankings, nor is it inluenced by a characters tier ranking. It simply shows what the general outcome would be if two players with the exact same skill level played each other and used specific characters.

The here is an official chart:

Also, another version can be found here: 

The charts are subject to change.