This is the tier list for the manga and anime Nanatsu no Taizai, or Seven Deadly Sins. I figured there should be one for this series, as well, since there are enough characters.
Inside the tiers, the characters are NOT in any kind of order, but separated to their sub-tiers with "-----" signs if possible. If there's any kind of problem with the list, or if there are characters to be added, please inform me. Top Tier is the strongest and from there it goes down to the weakest, which are characters who also are part of the series 
God Tier
Top Tier
High Tier
Mid Tier
Low Tier