Frontier Planets & Systems:
Core Systems
The Core Systems include Earth, its solar system, and other solar systems easily accessible from Earth. Little is known about the geopolitical state of these systems, except that these surrounding planets and systems are heavily populated and polluted, and that they have a lack of resources.
The Frontier
Angelia
Angelia is a planet in the Frontier. The planet is home to Angel City (formerly Port Janice), one of the first settlements in the Frontier and one of the largest cities to ever be on the Frontier. It was home to millions, if not tens of millions, of people. Angel City had a massive angel statue in its harbor, supposed to represent peace and unity across the Frontier. The company AI Logic, the parent company of Chevrex, was founded in the Harbor District of Angel City in 2445.
During the Frontier War, the IMC instituted martial law on the planet and constructed giant walls separating the districts of the city. Travel between districts was heavily monitored and the Harbor District's inhabitants weren't even allowed to leave their district.
At some point before the Battle of Demeter, the Frontier Militia went to the planet to retrieve a legendary pilot, Robert "Barker" Taube, supposedly "the guy that can fly anything." A battle ensued and the Militia was able to extract Barker, at the cost of many Militia infantry and pilots. By 2734, Angel City has been mostly abandoned, with Valkyrie calling it a "ghost town".
Cibus
Cibus is a planet on the Frontier, in between the refueling planet Demeter and the major world Gridiron. A mountainous planet, with at least one moon and fauna that is very similar to that of Typhon, it is mainly used for refueling ships and was filled with refueling facilities and repair and refit stations. Although large, the planet's refueling facilities were a far cry from those of Demeter's.
Many of the refueling depots on Cibus were owned by the Dionysus Corporation, a subsidiary of the IMC. One of these was Black Water Canal. After the Battle of Demeter, the Remnant Fleet used the facilities to be able to travel faster around the Frontier, harass Militia fleets, and conduct resource raids on Militia planets and shipping lanes.
Demeter
Demeter is a planet on the edge of the Frontier. Nicknamed "the Gateway", Demeter is the closest planet to the Core Systems, and was the first planet in the Frontier colonized by the IMC. As such, it contains major refueling stations and other infrastructure critical for ships making the journey between the Core Systems and the Frontier, so the journey takes only weeks instead of multiple years. Due to the significance and value of the planet, the IMC has stationed at least 1/3 of its entire Frontier naval capacity to defend the planet.
The planet orbits a dying red giant star, and has at least four moons. At least one of the moons is inhabited and has an IMC Air force base named Airbase Sierra. During the battle of Demeter, the base was attacked by the Militia in hopes of grounding a large portion of the IMC navy forces.
In the penultimate mission in Titanfall, the Frontier Militia attacked and successfully destroyed the refueling station, leaving the IMC forces stranded without backup. Five years later, during the Battle of Typhon, the refueling station has yet to be rebuilt, and IMC reinforcements have yet to arrive on the Frontier, although they promised that they would arrive in only 2 years. Due to the low number of IMC forces during those years, the Frontier Militia was able to take back over a quarter of the Frontier
Eden
Eden is a planet in the frontier in the Yuma system, named due to its favorable Earth-like conditions. It has at least two moons and a ring system. IMC marketing advertised the planet to colonists as the perfect place to live, filled with lush, verdant forests, and diverse wildlife. Many colonists moved to the planet, expecting a new life away from all the industrialization and pollution prevalent in the Core Systems, but once the IMC found massive fuel deposits in the planet's crust, everything changed. They started to establish massive mines and quarries, using methods like fracking to get access to untapped resources. After the industrialization of the planet, many of the natural environments like the large forests became deserts, and many species of flora and fauna alike became endangered or extinct. The mining industry on the planet displaced many of the residents and many of the cities became largely abandoned, with most of the population being IMC contractors and mechanized workers. Due to the fracking, the planet has become geologically unstable, causing massive earthquakes and ripping the landscape apart. The massive fault lines formed from these earthquakes created mountain-like structures that soar through Eden's sky.
Gridiron
Gridiron is a desert planet. It appears in Titanfall as an IMC-controlled planet that is heavily terraformed, although it is still blanketed in its home star's radiation, making it unsafe, and possibly even lethal, to stand on its surface for more than a few seconds. A particularly nasty stomach bug is also known to be found on Gridiron.
The planet has a population of 90 million and is the most populous planet on the Frontier to date. The only known city on the planet is New Anchorage. Before the Battle of Gridiron, the planet had an IMC base named Training Ground Whitehead, and many aspiring pilots went to the base to train. The base was protected by a 400-mile no-fly zone, and unauthorized vehicles detected in the area were either shot down or signaled to leave before the IMC used lethal force on the incoming vehicle. At about 100 miles away from Training Ground Whitehead, there is an abandoned reservoir that has been converted into a Militia covert listening post named Rise. The Militia used the base to spy on the nearby IMC base and intended it to be used as a staging point to attack Training Ground Whitehead.
At some point after the Battle of Demeter, but before the battle of Typhon, the IMC detected the base and launched an attack on it, with a battle soon ensuing between the Militia and IMC forces. Gridiron was the site of the last battle in the Frontier War. The battle is assumed to have resulted in a Militia victory, though both factions seemingly disappeared afterward and left the war-ravaged Frontier to govern itself. Travel from Gridiron to the Outlands takes roughly twenty years without access to a Jump Drive or high quality fuel. It is the homeworld of Bangalore and Newcastle.
Harmony
Harmony is a planet in the Freeport System. The planet has at least one moon and had an overall population of over 40 million inhabitants. Harmony's main industry is farming, with its landscape mainly being farmland with odd towns scattered in between. After the Battle of Demeter, Harmony became the Frontier Militia's headquarters and was the target of resource raids by the IMC's Remnant Fleet. Due to its status as the core Militia world, it was also the IMC's main target for the Fold Weapon. Harmony is the homeworld of the legendary Militia pilot Tai Lastimosa.
Lemuria
Lemuria is a peaceful, serene planet untouched by the IMC. Wealthy in natural resources, Lemuria is inhabited by a small agrarian population descended from early colonists. The planet's distance from IMC-controlled space makes it quite cost-inefficient for the corporation to exploit. Lemuria's terrain mainly consists of grasslands, forests and mountains with occasional bodies of fresh water, such as creeks, flowing through them.
Leviathan
Leviathan is a planet in the Badlands system. It is the homeworld of the gargantuan creatures also called Leviathans. There have been theories that much of the other alien fauna found across the Frontier, such as the reptilian Prowler, the large dragon-like Flyers, and even the hulking Goliaths, also came from this planet.
Leviathan is mainly desert, with multiple humid swamps. These planetary conditions are hospitable for humans, though the local wildlife is not. The population of the planet has depleted to less than 100,000 due to its extremely hostile wildlife. To combat this, IMC scientists created the Repulsor Tower. This new technology kept the wildlife away from cities and IMC facilities. One of these facilities, named Base Golden, was used to create and test the Repulsor Towers used all over the Frontier. Although it has been abandoned since 2690, the Militia sought out the base in 2710 to study the Repulsor Tower there in order to formulate a means of exploiting its weaknesses in preparation for their assault on Airbase Sierra. Despite the IMC's best efforts in battling them on the base grounds and the surrounding Boneyard, the Militia were successful in developing a "tower-toppling" Data Knife
Troy
Troy is a planet in the system dubbed Sector Bravo-217, near the Yuma system. The planet was previously unknown and unexplored by the IMC, and it stayed untouched until the Titan Wars, when the IMC ship IMS Odyssey mutinied against the IMC and decided to land on the planet, away from the IMC's grasp. The crew established a colony they called Colony G21, with a population of about 94. Around 15 years later, after the Fracture Operation, a Militia fleet detected a signal coming from the system, a distress call coming from the colony due after an IMC attack. After both fleets arrived in the system, a battle ensued and the former IMC legend James MacAllan, previously neutral, sided with the Frontier Militia. After the First Battle of Troy, many colonists had been either killed during the battle or captured by the IMC. Those captured were transported to an unknown location to be tested on by the ARES Division, specifically General Marder. At some point in time after the Battle of Typhon, the colony seemed to have recovered from the first battle, but was attacked again. It is unknown what became of the colony after the Frontier War. The terrain of the planet is very mountainous and yet tropical. It is unknown exactly how the tropical climate, the massive mountains, and the gaping canyons came to be, but it is suspected that acidic rivers carved the canyons out from the rock
Typhon
Typhon was a planet in the Frontier. It was Wraith's home planet, and the site of the campaign of Titanfall 2. It had at least one moon, Orthros, which was shattered by the IMC during the testing of the Fold Weapon.
It was the site of at least one ARES Division research laboratory, most likely focused on the huge installation ARES dubbed the "Fold Weapon", a relic left behind by an advanced alien civilization that is presumably extinct. When the Militia found out about the Fold Weapon, they sent in the 9th Militia Fleet, and a large battle ensued. During the end of the battle, pilot Jack Cooper caused the Fold Weapon to backfire, destroying Typhon. This happened because his Titan, BT-7274, sacrificed himself to save the Militia planet Harmony, the main target for the fold weapon.
Before the Battle of Typhon, genetic experimentation was conducted on Medusa vines. The experiment was called Project: LEGACY. The end result of the experiment produced a new species of Medusa vine that grows rapidly, is almost impervious to damage, and releases deadly pollen. When exposed to humans, this pollen causes symptoms that include bleeding from the eyes and eventually death 72 hours after symptoms first appear. 18 years after Typhon was destroyed, around 2733, a salvaging fleet called the Icarus Fleet, the flagship being named the Icarus, entered the system to salvage what was left in the wake of the massive battle that had occurred there. During salvaging, they came across the modified Medusa vines. Somehow, the vines infiltrated every ship and killed all the crew. In 2734, they entered Psamathe's system when the Icarus docked in Olympus, a city on Psamathe. Typhon is the homeworld of Wraith.
Victor
Victor is a planet in the Frontier in the Yuma system, the same system Eden is located in. This planet was once as verdant as Eden, and IMC marketed Victor just as they had Eden. Because of this campaign, many cities were built on Victor, and the planet became known for its wealth. As they had done on Eden, however, the IMC discovered massive fuel reservoirs deep beneath Victor's crust. So, the IMC began mining the planet, using methods that placed the residents in danger. For instance, the IMC's use of fracking seismically destabilized many areas of the planet. Because of this, the IMC decided to evict much of the population, if they hadn't already left on their own due to the numerous dangers on Victor. The wealthy abandoned the planet early, finding ways to escape the unstable planet. At some point before the Battle of Demeter, the 1st Militia Fleet of the Freeport Brigade raided some of the fuel depots in an abandoned city on Victor, but suffered heavy casualties because the IMC had known about the raids beforehand. During the battle, rifleman Jack Cooper was deployed and suffered a head injury, causing him to forget that the battle happened at all. The battle became known as the "Fracture Operation".