Henry Varro, nicknamed "Hero," served as a major in the United Citizen Federation's Mobile Infantry. He commanded the K-12 Team, a Roughnecks unit based at Fort Casey, and ranked among the Federation's most decorated officers. The nickname "Hero" originated from combining the first two letters of his given name, "He," with the last two letters of his surname, "ro." Before the events on the starship *Alesia*, Varro faced court-martial for disobeying a direct order from Minister Carl Jenkins during Fort Casey's defense. Jenkins had ordered Varro's unit to capture a live Arachnid Queen, but Varro refused, prioritizing his squad's survival over the high-risk mission. This insubordination led to his arrest and transport to Earth as a prisoner. Varro's leadership during Fort Casey's evacuation earned him unwavering loyalty from his troops. When the starship *John A. Warden* disappeared under Jenkins' command, the surviving K-12 troopers demanded Varro lead the rescue mission despite his prisoner status. General Johnny Rico authorized this conditional reinstatement, clarifying it wouldn't affect Varro's impending trial. Aboard the bug-infested *John A. Warden*, Varro directed tactical operations against the Arachnid Queen controlling the ship. His team secured critical areas like the engine room while coordinating with Captain Carmen Ibanez. During this mission, Varro disclosed the circumstances of his arrest to Ibanez, reaffirming his refusal to sacrifice his squad for Jenkins' objective. In the final assault against the Queen on Earth, Varro and his diminished team advanced toward her chamber. After discovering the sniper Trig's corpse, he proceeded with Lieutenant Otis "Bugspray" Hacks. Hacks sacrificed himself to delay advancing bugs. Varro then partnered with Jenkins, who deployed mind-controlled "Federal Intelligence Bugs" as reinforcements, revealing the strategic purpose behind capturing a live Queen. Critically injured during the confrontation, Varro detonated a grenade while surrounded by Arachnid warriors, killing himself and the immediate threats. This act enabled General Rico to attack the Queen and facilitated the escape of surviving personnel. Rico later acknowledged Varro as a "true hero," cementing his legacy of sacrifice.