After Anti-Gorne dies his older brother, Mad Gorne appears.
Anti-Gorne often left the space ship, Mad Gorne tends to stay in the space ship.
Mad Gorne makes far more use of the Gross Star Men then his brother did.
Mad Gorne
(Takes over after Anti-Gorne, appearing from Episodes #13-32)
Mad Saturn ( Episode #14 )
Mighty Gurosu ( Episode #15)
Demonstar ( Episode #16 )
Freezerkiller ( Episode #17 )
Antron ( Episode #18 )
Antron splits into 6 pieces each of which turns into a human. The 3 men and 3 women form a human pyramid to transform back into the monster.
Valentine ( Episode #19 )
Mad Gorne takes control of a bomber which he intendes to use to destroy Tokyo. When the giant monster appears PAT faces a dilemma. Do they concentrate on stopping the bomber or fighting the monster?
Dumpkong ( Episode #20 )
Mad Gorne sends 6 Gross Star Men to a junk yard to steal old, junked vehicles, convert them into mobile bombs, then drive them onto city streets to crash into other vehicles and buildings. (Kind of like modern terrorists). After PAT ruins that plan the Gross Star Men merge with an old dumptruck, turning it into a giant monster
Wutan ( Episode #21 )
In episode 21 Jumborg Ace follows a rocket, launched from Earth, into space and ends up fighting three monsters he has already destroyed (in episodes 1, 11, 13). While he's in space Earth is attacked by a new monster.
Terro King ( Episode #22 )
Three Gross Star Men kill humans and take over their bodies then try to turn the townspeople against PAT. When the plan fails Mad Gorne turns the three into a giant monster.
Stone King ( Episode #23 ) A shadow man succeeds in stealing secret plans from PAT headquarters. This doesn't stop PAT from celebrating their founding day anniversary. A group of Gross Star Men shrink themselves and hide inside a statue used at the celebration in an attempt to infiltrate PAT's Japanese headquarters. When they're discovered they turn the statue into a giant monster. This monster has probably the shortest screen time of any in the series.
Chameleon King ( Episode #24 )
Gaiagnes ( Episode #25 )
Nonbirigon ( Episode #26 )
Nonbirigon sends out waves which put adult humans to sleep. The waves have no effect on children, who like not having adults telling them what to do. Nonbirigon also carries Gross Star Men in its chest. They take over some adults who were not put to sleep, and use their bodies to plant explosive devices all over town.
JumKiller ( Episode #27 )
Mad Gorne releases his own super robot warrior, which defeats Jumborg Ace (but is the first to be destroyed by Jumborg 9).
Airdriller ( Episode #28 )
In episode 28 the monster stores Gross Star Men inside its claws. They abduct a scientist who is an expert on radars. The monster escaped from Jumborg 9 by flying away but it couldn't escape the repaired Jumborg Ace.
Imitation Jumborg Ace ( Episode #29 )
Double Killer ( Episode #30 )
In episode 30 Mad Gorne sends two monsters to destroy Jumborg Ace and 9. They nearly did. For a change, there were no Gross Star Men in this episode.
Arumazigon ( Episode #31 )
Heres a giant armadillo and can roll into a ball. It fights Jumborg 9 only.
Mad Gorne ( Episode #32 )
For episode 32 a giant sized Mad Gorne faces Jumborg 9 alone. The last two Gross Star Men sneak into PAT headquarters.
Satan Gorne Appearing in Episodes #32 to 46
Before he died Mad Gorne warned that his place would be taken by Satan Gorne. Satan Gorne is heard but not seen in episode 32. In episode 33 he impersonates Santa Claus to trap children. He turns them into toy monsters. He fought Jumborg 9. Wounded in the battle, he flew away before the super warrior robot could kill him. There is no other monster in episode 33.
Butterfly King ( Episode #34 )
This monster disguises itself as woman dressed in white, who controls a bunch of deadly alien butterflies.
Goldragon ( Episode #35 )
Goldragon first appears as a golden chains which moves through the air to strangle people to death. When Jumborg Ace is about to attack Satan Gorne he calls for Goldragon and the chains transform into a two-headed monster with a tail but no feet, instead chains hang down from its body.
Orolonger ( Episode #36 )
The monster in episode 36 is guarding a secret mountain base and only attacks when someone approaches the base.
Electric Bird ( Episode #37 )
This monster grows inside a giant egg which was hidden under an amusement park.
Kendaurusu( Episode #38 )
Satan Gorne sends out cyborgs dressed in black to release a deadly poison. After PAT kills all the cyborgs the head of the last one flies off and transforms into a giant monster
Death Moon ( Episode #39 )
This monster hidden in a lake kills people then animates their skeletons.
Skeleton ( Episode #40 )
When it looks like Jumborg 9 may lose to the monster Satan Gorne appears to share in the victory. Of course when Jumborg 9 defeats the other monster Satan Gorne flies away.
Space Witch Barabas & Onesto King ( Episode #41 )
Space Witch Barabas ( Episode #42)
Jum Killer Jr ( Episode #43 )
In episode 43, seaking revenge for the death of Barabas, Satan Gorne summons a deadly robot monster to Earth. Gross Star Men abduct a busload of children. When the bus rockets into the air Hunter Q takes off after it and is shot at by the robot which is hiding in the clouds. When Jumborg Ace grabs the bus the robot appears to fight. Jumborg Ace is defeated (but not destroyed). Satan Gorne appears, to gloat. His celebration is cut short when Jumborg 9 shows up.
Mirror King ( Epsidoe #44 )
This monster intrudes in the dreams of Naoki's sister-in-law. And because PAT has invented a new weapon the Gross Star Men repeatedly attempt to infiltrate PAT headquarters. They finally succeed in abducting Naoki's sister-in-law and nephew. One of the Gross Star Men turns into the giant monster. The hostages are kept in its stomach.
King Beetle ( Episode #45 )
King Beetle hides under the sand, and grabs children. Satan Gorne loses an eye to PAT. When King Beetle takes Kazuya the monster seals his fate, Jumborg Ace takes him out. Satan Gorne joins the battle but can't save King Beetle.
Satan Gorne ( Episode #46 )
The leader of the Gurosu Seijin, Demon Gorne, comes to Earth and gives Satan Gorne one last chance to defeat Jumborg Ace and Jumborg 9. PAT headquarters is invaded, by mice. They kill a maintainace man and terrorize the female officer. They also get into Tachibana, Naoki's car. Their high pitched squeeking nearly drives him mad. In his final battle with Jumborg Ace, Satan Gorne is wearing armor and a helmet. For this battle SGM sends several jet fighters to assist PAT.
Demon Gorne ( Episode #47 )
Demon Gorne first appears as a human female before appearing in monster form. After defeating Jumborg 9, Demon Gorne takes control of the super warrior robot, forcing it to attack Jumborg Ace. Demon Gorne then begins to destroy Tokyo.
In episode #48, Demon Gorne abducts Kazuya, his mother and two PAT officers, then causes Hunter Q to launch itself. Tachibana, Naoki and the two remaining PAT officers are nearly ran over, by Naoki's car. In episode 49 Demon Gorne is able to alter the flow of time, speeding it up so hours pass in seconds or slowing it down so seconds take hours, or even reversing it. Kazuya and a friend are shrunk and sucked into a clock.
In episode #50 (The final episode)
Demon Gorne places a giant mirror on the moon and uses it to reflect concentrated rays from the sun onto Tokyo, setting the city on fire. When Hunter Q is shot down, on the moon, by Demon Gorne, Jumborg Ace flies to the moon to confront Demon Gorne. When Demon Gorne turns the heatray on Jumborg Ace, causing major damage, Tachibana, Naoki has no joice but to retreat, returning to Earth. Later, as the one woman and three men of PAT flew their jet fighters to the moon, Naoki attached Jumborg 9 to a missle aimed at the mirror, so Jumborg 9 is carried to the moon for the final battle against Demon Gorne.