There are characters in Gradius Series. However, few of them are enough information to be included in this page.
James BurtonThe hero of Gradius 1, Nemesis 2, Gradius Rebirth. He is a Wreekian, just like Dr. Venom. After defeating Venom in Nemesis 2, James becomes Emperor Lars 18th. He passes away in year 6718, but that doesn't stop Dr. Venom from going to the past and kidnapping a three-year old James. Thank goodness David Burton, a descendant of James, saved the boy from Venom.
David BurtonThe hero of Nemesis 3. A descendant of the late James Burton, David repels Bacterian forces and discovers the Bacterians going back in time to change history. David saves a three-year old James Burton from the Bacterians and frees the Bacterian controlled planets.
Eddie EvansOne of the protagonists of the Salamander OVA series. He gets manipulated by Paula, a Bacterian disguised as a human, into destroying the Bacterian repellent: the Moai Statue. Eddie redeems himself by sacrificing himself(by flying into the mouth dragon named Salamander) to save Gradius.
StephanieOne of the Protagonists of the Salamander OVA series. In the second Salamander OVA, she had to destroy her own father (who was kidnapped and turned into a Cyber Brain by the Bacterians). In the third, she gets kidnapped by the Bacterians and almost got become a cyber brain just like her father, but gets saved in time by Dan and Lord British.
Lord BritishOne of the Protagonists of the game Salamander and the Salamander OVA series. He is the ruler of planet Latis. His personality isn't very detailed in the games, but in the OVA series, he's a Jerkass.
BacterionBacterion, the god of destruction. The creator of the entire Bacterion Empire, Bacterion always tries to invade Gradius, home of the Vic Viper, the ship that always defeats him.
GoferThe Big Bad of Gradius II and IV.
Zelos ForceThis Bacterian is a red gigantic eye created as a Living Weapon by the forces of Bacterion to transform planet Latis, a neighboring planet, into Bacterian territory.
PaulaA female Bacterian who is the Big Bad of the Salamander OVA series.
Life Force/Zelos(Not to be confused with the other Zelos)A Planet Eater that eats planets. Usually, you have to destroy him from the inside.
Big Core SeriesA series of large Bacterian Warships that mostly serve as the bosses of the Gradius Series. So far, there are Big Cores MK I, II, III, IV, and many variants.
Dr. VenomThe Big Bad of Nemesis 2, 3, Gradius Re Birth and V. He constantly tries to destroy Gradius for using his people, who became an endangered species thanks to a future version of Venom and Gofer, only for their ESP powers.
Doom"I'm going to scare you like you've NEVER been scared before!" .
The Big Bad of Salamander 2. He was the most recent leader of the Salamander force, an elite Bacterian army that was previously led by Zelos Force and Venom. He only appeared in Salamander 2.
O.V.U.M (Original Visions of Ultimate Monster)O.V.U.M, the main villain of Gradius Gaiden. He transforms into several entities from the Salamander Army before exploding.