TerraforMARS (alternatively Terra ForMars or Terra Formars) is a currently ongoing action/sci-fi manga written by Yu Sasuga and illustrated by Kenichi Tachibana.The year is 2599. Humanity has reached an unsustainable level of overpopulation on Earth, and is beginning what would be the final stages of terraforming and colonizing Mars. The plan by late 21st century scientists was to release a form of moss on the planet along with cockroaches, who in turn would grow and eat, and their corpses would contribute to the moss growth, eventually leading to enough of a greenhouse effect for a breathable atmosphere to take hold. Recently a team named Bugs #1 went to Mars to exterminate the roaches, since the atmosphere had developed enough that the moss alone could finish the job. However, contact was lost with them almost immediately after arrival.Now it is the time of the second expedition, Bugs #2. Upon arriving, the team found out what caused Bugs #1 to lose contact: the roaches. Having hyper-evolved in the last 500 years (hinted due to alien influence), they are now 7 ft tall cavemen-like humanoid creatures who posses their original proportional strength as bugs (50 times their body mass), and the seeming ability to keep evolving against anything that can kill them. However, the company that sent out Bugs #2 knew this was going to happen, and had prepared for it. The team members are all able to take on aspects of other creatures in the animal kingdom, and use that proportional abilities and unique insect powers to fight back against the nearly endless hordes of roaches.Very explicit and bloody, and in many ways is a Spiritual Successor to Gantz. In 2014, the series gained an OVA covering the BUGS 2 arc and a 13 episode TV anime adaptation covering the Annex I arc.Now has a Character Sheet in the works.
Anyone Can Die: For instance Bugs #1 is annihilated by the first prequel chapter and there are only two survivors from Bugs 2 by the end of the first volume.
Before the end of the second chapter, the main male character's girlfriend is given a One-Hit Kill in the first encounter with the bugs.
Arc Words: "The memory left by Rahab". As of this point, we don't know who or what Rahab is, just that he/she/it is probably responsible for what the roaches have become in just 500 years.
Artistic License - Biology: This almost doesn't need to be said. While the actual attributes and abilities of the insects they are based on are true, you can't just turn humans into human-bug hybrids outside of the X-Men. Not to say anything about the roaches' hyper-evolution, which is less like evolution and closer to the adaptation ability of the Borg. To further complicate matters the moths that were left on Mars seem to be evolving even faster than the cockroaches. Showing fingers on their bodies. Despite basically being a foodsource or the cockroaches that strengthens them.
Body Horror: If a human dopes on too much of the transformation drug, they become too insectoid and cant transform back, becoming more biologically insect than human. Since an insect's biology is not meant for a human sized creature, Reality Ensues, and the person in question dies.
Bug War: Though in a twist, the human are more bug-like when transformed than the roaches.
Instant Expert: The bugs somehow manage to learn how to use human equipment despite the fact that the most advanced weapon they had previously was a club.
A large part of this is hinted to be the result of the fact that the bug's brains have evolved as much as their bodies (and have some sort of extraterrestrial tech available to help educate them). They have, by Bugs #3, become as smart as humans, if not more so, and simply lacked the necessary infrastructure needed to be able to build an industrial base like the humans have. Given that each Bugs missions has several years between them, this has given the roaches plenty of time to learn the basics of whatever tech they capture from previous missions, and from what they learn from that, allows them to quickly master any new tech they receive.
Fragile Speedster: Marcos is definitely this after transforming, being blessed with quick movements and fierce strength but unfortunately doesn't have much endurance and as a result must catch his breath on the battle field.
Meaningful Name: The series title can be read as both "Terra for Mars", referencing the project that drives the basic plot, and as a slightly slurred pronunciation of "Terraformers", which the titular roaches were created to be.
Mood Whiplash: During the third expedition, some of the male characters are debating whether to peep on a woman in the shower room. And then it turns out a flying roach had infiltrated the ship and brutally killed her. And then all hell breaks loose.
Nice Job Breaking It, Hero: Adolf Reinhardt may have killed the roaches leader, the single genius of their species who was responsible for giving other members Bugs Surgery but in doing so, he forced the species as a whole to increase the quality of the individual's intelligence, making it so they would no longer need a genius to lead them.
One-Hit Kill: One of the things which keeps happening to the crews, which is to be expected from enemies which are Lightning Bruiser level fast and strong at the mook level.
Person of Mass Destruction: Those who have undergone the Bacteria-type M.O operation, effectively turning them into biological weapons capable of killing an entire swarm of Terra Formars in less than a minute
Poor Communication Kills: This appears to be at first the reason behind why the roaches wanted to kill us as soon as we first saw them, but later it turns out that they just have an instinctual need to "squish" us much like how we do towards regular roaches.
Power Copying: Some of the roaches facing the third expedition ave somehow evolved to be able to use the bug powers that the crew of Bugs #2 used.
Rule of Symbolism: The Bible (specifically, the Plagues of Egypt from Exodus) is quoted and referenced down to the book from time to time. The first time is when Thien, a Desert Locust hybrid, rips apart a room full of roaches. Cue quote from the Plague of Locusts.
Scenery Porn: For a desolate red wasteland, Kenichi Tachibana can make the mountainous terrain of Mars look beautiful.
Slasher Smile: While the roaches usually have expressionless faces, some of them pull off this.
Starfish Language: The roaches clearly have some form of language, but to us it just sounds like "Juh" over and over with different inflections.
Shockand Awe: Adolf Reinhardt's M.O. Operation allows him to generate incredibly powerful electric shocks.
Teeth-Clenched Teamwork: Averted with the Mars teams who work together perfectly (and they need to just to stand a chance at surviving) despite all being from different countries. However there are hints that there is friction between the higher ups of each country.
Twenty Minutes into the Future: It's the 2600s and all that's shown to have changed is that society's gotten worse due to overpopulation and some improvements in space travel.
Unskilled, but Strong: The roaches started out as this. By the end of volume 1, there were new roaches born that instinctively knew how to counter martial arts styles and took combat stances when fighting.