Gofer is the primary antagonist and final boss of the game Gradius II. He also appeared Nemesis 3 as the last boss of the game. In Gradius IV, a seed of Gofer destroyed in Gradius II grew up and lead to his revival, making him the game's final boss again. It may be possible that Gofer was a piece of the Bacterion entity since all the other Bacterions are a part of the Bacterion core.
In Gradius IV
When Gofer was destroyed in Gradius II, a piece of him landed on a distant planet and then mutated into a large battleship similar to the Xearous Fortress from Gradius. It then changed its form into his new form shown in Gradius IV. He claims that every piece of him spread across the universe will reborn as copy of himself when he is destroyed again.
In Gradius II Arcade and Gradius IV, Gofer does nothing, but in Gradius II NES and Nemesis 3, he can spew energy balls or lightning bolts from his mouth.
Gofer appear in the Salamander anime third series, alike that he's he final boss, in the anime he doesn't attack at all.
Although Gofer may be a part of Bacterion, the Salamander anime implies that Gofer is an organic weapon made by Bacterian, which has the ability to grow up and change the whole universe into the reign of Bacterians, gathering the intelligence from other creatures. However, currently the anime trilogy is considered as non-canon in Gradius saga.
When Gofer was destroyed in Gradius IV, Gofer's brain was split in two parts, the two sides of his brain evolved into his daughters, the Gofer Sisters.
|Stages (Arcade)||Artificial Sun • Alien • Crystal • Volcano • Revenge of Moai • High Speed Zone • Boss Rush • Gofer Ship Interior|
|Port-Exclusive Stages||Volcano - Crystal (NES) • Enemy Base (NES) • Gofer's Lair (NES) • Temple (PC-E)|
|Bosses||Phoenix • Big Eye • Giga (NES) • Crystal Core • Death MK II • Jumping Moai • Big Moai • Desert Core (PC Engine) • Big Core MK II • Zub Rush • Big Core • Tetran • Gau • Intruder • Zelos Force (NES) • Covered Core • Demos • Crab • Gofer|
|Stages||Liquid Metal • Plant • Bubble • Magma • Moai • Cell • High Speed • Boss Rush • Final Fortress|
|Bosses||Yorogaton Chimera • Dendrodium • Bubble Core • Gillador • Alpha/Omega • Berial • Rolling Core • Vanishing Core • Big Core MK III • Covered Tetran • Berserk Core • Planet Core • Bloody Gate • Crab-II • Gofer|
|Characters||James Burton (Metalion) • David Burton (Vixen) • Gaudie • Venom • Venom's Aides|
|Nemesis 2 stages||Colossus Planet • Plant Planet • Ancient Planet • Floating Continents • Planet of Fire • Living Planet • Sin • Asteroid Belt • Water Planet • Venom Mothership|
|Nemesis 3 stages||Sun • Plant • Gravity • Past-Boss • Moai • Hell • Sand • Cell • Factory • Gofer Ship|
|Nemesis 2 bosses||Statue Guardians • Riot Warship • Misfit Warship • Big Core X10 • Mayhem Warship • Biological Organism • Block Core • Abaddon Warship • Venom|
|Nemesis '90 Kai exclusive bosses||Lizard Core • LASER Core • Big Core MK II Kai • Beta Core|
|Nemesis 3 bosses||Geezer Butler • Hans Naughty • Tetran • Abaddon Warship • Misfit Warship • Big Core • Armored Saint • Lynyrd Skynyrd • Triumph Kicks • Killer Dwarf • Crab Warlock • Queensrÿche • Gofer|
|End Bosses & Major Enemies|
|Major Recurring Foes||Gofer • Bacterion • Dr Venom • Zelos Force (Zeros) • Lars Empire • Gofer Sisters|
|Minor Enemies||Brain • O.V.U.M. • Eleos Brain • Mother Computer Z • Guardian Core • Central Server • Genocide Core • Outer Limits / Metal Slave • Zelos Barrier • Doom • Dark Force|