Tri-Sports Arena (Mirage)

In the Mirage continuity, the Tri-Sports Arena is an asteroid-based sporting facility among the of the. The arena hosts gladiator-style fights to the death in front of a live audience, sports commentators and public broadcast cameras.

History
The and Professor  are taken here in Eastman and Laird's Teenage Mutant Ninja Turtles volume 1 issue #6: The Triceraton Homeworld, where Triceraton Prime Leader  is forcing the Turtles fight Triceraton warriors to pressure Honeycutt into surrendering the secrets of  technology to the Republic. Honeycutt refuses, but the Turtles manage to kill or defeat some of their opponents and hijack a manned broadcast camera hovering just above them, using it to rescue Honeycutt and take Zanramon as their hostage. The Turtles grab some Triceraton blaster weapons and take Honeycutt and Zanramon out of open view and into the Arena's hallways, where Triceraton friendly fire accidentally shoots Zanramon. Before the gun battle can reach a definitive conclusion, the Turtles, Honeycutt and three random Triceraton soldiers (including and the unnamed Triceraton who would later reappear at D.A.R.P.A.) are remotely beamed by 's Transmat back to.

The fallout from the events at the Tri-Sports Arena has an immediate seismic effect on both the Triceraton government and its military. Zanramon was not killed, but is deposed as leader. And the Republic's military would comb over the event's video footage to learn from their mistakes and shortcomings. The initial tactical analysis concludes that Triceraton military tactics had over-relied on brute force, and need to be more adaptable like the Turtles they had fought in the Arena. With this, a new uniquely Triceraton martial art, t'jat uhasil, is developed to try to emulate the Turtles' fighting techniques; it favors shorter, lighter, more agile combatants much like the Turtles themselves, and its tactical maneuvers would more closely resemble the Turtles' own ninjutsu. T'Zirk, a Triceraton soldier who had himself been injured and blinded in one eye in battle with the Turtles during the event at the Arena, would become a leading practitioner of the art along with his Terrors.