While it is not known to evolve into or from any other Pokémon, Genesect has four other forms, which are activated by inserting the Drive in the cannon on its back. The Drive is visibly different within its sprites depending on the Drive it is holding.
Shiny Genesect in its high-speed flight configuration
Genesect is a bipedal, insectoid Pokémon with a metal body and a saucer-shaped head. It is primarily purple with several gray markings. It has two large red eyes and a small white part that could be either its mouth or a vent. It has thin arms with overlapping segments. Each arm ends with a single, pointed claw. There is a gray circle on each shoulder, and a gray band around its abdomen. Its segmented legs each end with a large, upward curving claw.
Genesect spinning its silk
The powerful cannon on its back and other enhancements were apparently added as part of the bizarre modifications made to it by Team Plasma. It is the only Pokémon capable of learning the move Techno Blast, an attack which changes type depending on the Drive it holds. It is indicated that even before Team Plasma powered up Genesect, it was a skilled and ruthless hunter. By folding up its limbs and connecting its head to the cannon on its back, Genesect can assume a flying saucer-like form, allowing it to fly. This form is known in Japanese as the 高速飛行形態 high-speed flight configuration. It can also spin a sticky string from its claws to create structures.
Genesect was revived from a Fossil and technologically enhanced by Team Plasma to create the most powerful Pokémon ever. N had the project cancelled and the P2 Laboratory closed because he felt that Pokémon, who he thought to be perfect beings, would lose their beauty if modified by science. However, Scientist Dudley kept working on it, angry that N denied his talent. This scientist reconstructed Genesect and installed the cannon on its back.
The Genesect Army, a group of five Genesect led by a Red Genesect, first appeared in Meowth, Colress and Team Rivalry!, where N found the ruins of a building and learned the Genesect Army were responsible for the destruction by using his ability to hear the voices of Pokémon.
In Mr. Perfect, Colress attacked Aspertia City with another Genesect, where it came into contact with Blake and Looker, the former of whom ultimately captured Genesect. Although Blake had initially reported Genesect to the International Police, he was seen in possession of it in Cold Storage Battle, riding it through the Relic Passage. In PS541, it was revealed that Blake had taken Genesect for his own use without permission, despite it having been under strict supervision, which was one of the reasons why he had been subsequently fired from the International Police.
In the Pocket Monsters B2 W2 ~ A New Legend ~ manga
Genesect was a Pokémon created by Dr. Zeno. After it saved Dr. Zeno from being trapped in his lab, he decided to give it to Arata in order to bring out its full potential.
Gensect appears as a Poké Ball summon. In the 3DS version of the game, it is unlocked after playing Endless Smash at least once. It jumps around the stage, repeatedly firing four Techno Blast attacks, followed up by a wide beam. Both shots can go through walls.
NA: A Bug/Steel-type Pokémon, Genesect was created from a 300-million-year-old fossil and later altered to carry a giant cannon on its back. The type of Drive inserted into the cannon affects the attack type of its Techno Blast. It will follow up this attack with a long-range laser.
PAL: A Bug- and Steel-type Pokémon revived from a 300-million-year-old fossil, then modified to carry a giant cannon on its back. The type of Drive inserted into the cannon affects the attack type of its Techno Blast. After using this attack mid-jump, it attacks its target with a long-range laser than passes through obstacles.
When sent out, from Generation VI onward, Genesect unfolds from its high-speed flight configuration. This is the only time this configuration can be seen in the games.
Genesect is generally based on the giant insects of the Paleozoic era, which existed for 300 million years, making it as old as the cockroach. Its Steel-type features that give it a somewhat robotic appearance may be a reference to alien robots in science fiction media, but this may be due to Team Plasma's modifications. Its design might also be inspired by the "artillery mech" vehicles in various mecha anime and manga.