This iceberg contains every enemy and boss that is a part of the Sonic the Hedgehog game series. Enemies and bosses from fangames will not be included. Characters from the movies or shows will not be included unless they also appear in the games. Enemies or bosses that do not originate from the Sonic franchise will not be included. For enemies or bosses that appear in multiple Sonic games, only their first appearance will be mentioned in the description. If multiple enemies or bosses share the same name but are considered separate entities, they will all be included, with the game they originate from being included in parentheses after their names. Enemies or bosses that have multiple forms will have all their forms included. The tiers are based on levels of obscurity, and every appearance of the character will determine how well known it is. Non-game appearances will be counted for popularity, such as the Archie and IDW Comics. The further down you go, the more obscure the enemies and bosses become. Original iceberg was made by Dark_Overlord, but he gave me permission to reupload it.