Katar is a type of dagger originating in southern India. It is often likened to the push daggers from across the world, but is overall different in many ways. The katar has two parallel bars held together by cross-pieces, topped with a large, triangular blade. A type of katar which starts out with this blade, but can pop open to reveal a blade inside with the previous blade becoming two, is commonly called a scissors katar.
In TMNT[]
Despite being a weapon from a completely different country than the origin of ninja, katar are seen in the hands of Foot Ninja multiple times in Mirage continuity. Most prominent is one who is among those assaulting Second Time Around in Silent Partner, appearing front and center in the large two-page spread revealing Oroku Saki (clone)'s appearance. He later has his katar knocked out of his hand by Casey Jones.
Katar were often packaged with action figures from Playmates Toys' 1988 toyline, including all four basic Turtle figures. It was one of two weapons labeled as "Fist Daggers" or "Turtle Fist Daggers".
Shredder in the 2012 TV series has special Tekkō-kagi which can open up into three blades like scissors katar. The Foot Ninja would occasionally use these when in battle with the Turtles.
Karai kills Raphael by stabbing him in the throat with a katar in The Last Ronin.
Two Heroclix figurines were released depicting Foot Clan members with katar: Foot Ninja (Katar) and Foot Tech (Katar).