Triceratons

Triceratons are an alien race who resemble anthropomorphic triceratops, and usually breathe a mix of nitrogen and sulfur. Outside of their native environments, usually they wear protective face helmets to provide them with necessary atmosphere. They destroyed their home planet for some unexplained reason.

2001 CGI project
The Triceratons have a brief appearance in the promotional trailer for a proposed computer-animated series that was never produced.

Animated film Prequel
In the first movie prequel comic, Leonardo becomes angry with Raphael for trying to leave them in order to save a man from being mugged because there are four heavily armed Triceratons in the sewers who could cause devastation to the city.

List of Known Triceratons

 * Azokk
 * Boss Zukko: Appears in Fast Forward
 * Captain Zak: Appears in the Image Comics
 * Daz Ublem: Member of the Triceraton All-Star Team
 * Gruell: Appears in the 2003 animated series
 * General Mazog: From The Teenage Mutant Ninja Turtles magazine.
 * Mixx Trolo: Member of the Triceraton All-Star Team
 * Monza Ram: Leader of the Triceraton All-Star Team
 * Commander Mozar
 * Navigation Officer Thrunknor: Appears in Mirage vol. 2
 * Rez
 * Traximus
 * Major Tritan
 * TriShreddatron: Cancelled.
 * Commander T'Zirk
 * Xarxfarm:Zanramon's Chief Scientist from The Teenage Mutant Ninja Turtles magazine.
 * Xoite Damaz: Member of the Triceraton All-Star Team
 * Zad: Appears in the story The Lesson: A Tale of the Triceraton Marines
 * Zan: Appeared in Gizmo and the Fugitoid, Book Two
 * Prime Leader Zanramon
 * Captain Zarg: Appeared in the story Terror by Transmat!
 * Fleet Commander Zarghan (Mentioned in TMNT Volume 4, #31)
 * Captain Zarax: Appears in the 1987 animated series. Voiced by Dorian Harewood.
 * Zed Lakin and Raz Charkov
 * Zeg: Appeared in Gizmo and the Fugitoid, Book Two
 * Zern
 * General Zhath: Appeared in the Mirage Comics issue 6.
 * Z'nar: Appears in vol 4, #30
 * Sergeant Zule: Appears in the story The Lesson: A Tale of the Triceraton Marines
 * Zog
 * Zon
 * Zong
 * Zorkk
 * Zovok
 * Zunc: Appears in vol 4, #30
 * Zunkka: Appears in vol 4, #30
 * Zura