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The Foot Clan (足一族 Ashi Ichizoku or フット一族 Futto Ichizoku or フットクラン Futto Kuran), often called the Foot, is a fictional Japanese ninja clan in the Teenage Mutant Ninja Turtles franchise that is typically led by the Shredder and is the main antagonist of the Ninja Turtles and their allies.
The Foot Clan consists of a multitude of faceless ninja who exist to do battle with the heroic Ninja Turtles and although most individual Foot Ninja tend to fall rather easily, they are nothing if not persistent and continually return to take more punishment.
The Foot Clan was originally a parody of the criminal ninja clan The Hand in Marvel Comics' Daredevil. In addition to the obvious similarity in their names, both are ninja clans that originated from feudal Japan, practice ninjutsu, and black magic that now run powerful international organized crime rings who are familiar with multiple illegal activities such as drug smuggling, arms running, and assassination.
The Foot Clan symbol has been a left foot in most incarnations, except for the films, the 2003 TV series, the 2012 TV series, and Rise of the TMNT where it is a right foot.