Havin IV is a planet with a major significance to the Heretic Dinofox Universe.
After the planet Lawlderan was destroyed by the Chat Star the fleeing resistance forces regrouped at Havin IV. A probe managed to track the fleeing fleet to Havin IV, and the Chat found out that The Resistance was using Havin IV as a temporary base. Realizing that they could easily get rid of the Opedian remnant, the Chat mobilized every spare ship they could to attack Havin IV, with the assistance of the Chat Star.
The Chat's fleets arrived first, crushed the defense fleet that decided to stick in the fight, and the entire planet was surrounded. The Chat Star arrived next to the gas giant 'Havin' and began an orbit around the gas giant. While it was closing in around Havin, and only hours away from being in range to fire on Havin IV, Team Heretic Dinofox and a massive squadron of the resistance's best starfighters squeezed past the fleet that was holding the entire planet hostage. They made their way to the Chat Star, and faced heavy defenses ending with most of the squadron being destroyed. The planned attack was going to be on a two meter wide ventral port, where the starfighters would concentrate all of their firepower into one beam that would shoot down into the heart of the Chat Star. The plan failed when most of the "salvo squadron" was destroyed, leaving Fox from the Heretic Dinofox team to be the last one with an answer; a Smart Bomb. The Chat Star wasn't hours or minutes away from firing on Havin IV, it was seconds. He made his way to the vent, and was followed by a swarm of Chat Fighters. In the heart of the swarm was, Darth TheHackingDog and the entire swarm attempted to unleash a massive volley of comment lasers at Fox, until the bounty hunter Dark Luymia flew in last second to fire a bomb into the swarm, causing a panic leaving most of the ships destroyed. Darth HackingDog's ship was clipped and forced out into space; later recovered by the Chat's fleet. Fox finally fired his smart-bomb into the vent, just as the commanding officer and desiginer of the Chat Star, Grand Troll Yarkin, gave the order to fire on Havin IV. The smart-bomb made its way into the core reactor and destroyed the Chat Star.
The event was not a victory however, whatever Chat vessels survived the explosion of the Chat Star bombed the major cities of Havin IV, leaving much of the planet barren with major ground casualties. The Team, General SheerAvenger777, and the majority of the resistance fleet managed to escape the bombing; but Havin IV was lost from the resistance for good, and its fate was similar to that of Yavin V.