Another 'tribe' indigenous to Cronos, the Rock People seem to be quite literally made of rock going by the scant physiological information the series gives us on them, though some seem to have mechanical parts. Some aligned themselves with the Machine Robo, others with the Gyandlar. Both groups used the Rock Commander craft - a tank-like car that could turn into a single-seater jet.

The characters and toys formed the short-lived Rock Lords line in the West.


Something of a warrior priest, Cross Rock was found frozen under the lake neighbouring Yamilan. Upon being thawed out he warned the defenders of an attack via the lake, allowing the Machine Robo to successfully defend the city. He stayed allied with Rom's army, later helping locate Ruby Man. He participated in the battle with the Gyandlar, operating alongside the similarly-wise Mask Rock.

The character was based on the Cross Rock toy (issued in the West as Crackpot), which was released to tie in with the cartoon.

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Rom's friends first encountered Mask Rock (together with Magna Rock) in a mountain pass near Yamilan while transporting Metal Laster to the city. While he was initially furious that a battle was taking place near the mountain but soon realised Rom's team were noble and the Gyandlar were the aggressors. He could phase through rock at will. After helping locate Ruby Man he joined up with Rom's army and aided in the final battle against Gadess' forces.

The character was based on the Mask Rock toy (issued in the West as Marbles with the mask paint omitted), which was released to tie in with the cartoon.

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Magna Rock helped Mask Rock guard the mountain pass approaching Yamilan. He was later instrumental in alerting Rom's unit to the presence of Ruby Man and later used his phasing ability (which he shared with Mask Rock) to find the Wolf Sword (though it turned out to be a fake). He could also activate a powerful personal forcefield. Along with his partner he joined up with Rom's army and battled the Gyandlar.

The character was based on the Magna Rock toy (recoloured for the West as Slimestone), which was released to tie in with the cartoon.

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Diamond Man, one of the three legendary Jewel People, reappeared above Cronos in time to save Baikanfu from a trap set by Grujios. He then joined up with Rom's forces, freeing the Wolf Sword from Gattai Saurer and aiding in the final battle against the Gyandlar.

He might be called 'Dia Man', I've seen conflicting translations given and can't quite tell from the cartoon. The character was based on the Diamond Man toy (released in the West as Solitaire), which was released to tie in with the cartoon.

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Imprisoned in a mountain, Ruby Man - second of the Jewel People - was found by Mask Rock and Magna Rock and later rescued by Rom and his friends. He joined their battle against the Gyandlar, helping co-ordinate the final assault on Gadess' mothership. He had the ability to heal wounds with a simple touch.

The character was based on the Ruby Man toy (released in the West as Flamestone), which was released to tie in with the cartoon.

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Amber Man was the third of the Jewel People. His fortress, built with his own telekinetic power, was discovered by Cross Rock but initially Amber Man refused to join the conflict. Rom was able to convince him the Gyandlar intended to ruin Cronos and he eventually joined the Machine Robo army. Thanks to his ability to control Rockdon and Rockgiran he was a vital ally in the climactic battles with the invaders.

The character was based on the Amber Man toy (released in the West as Sunstone), which was released to tie in with the cartoon.

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The four Fossil People - Header, Abarar, Leggar and Taildar - first encountered the Machine Robo army during the search for the Wolf Sword. They saved Rom and revealed that their combined form - the huge Gattai Saurer - contained the real sword. They then joined up with the army, allowing Diamond Man to extract the sword. Their combined form was one of the most effective weapons in the Machine Robo arsenal during the final assault on the Gyandlar mothership.

The character was based on the Gattai Saurer toy (released in Europe as Fossilsaurus), though this wasn't released until the Battle Hackers line started later in 1987.

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The semi-sentient Rockdon first appeared imprisoned in a mine under Cronos. The beast was freed by the Gyandlar but eventually battled into submission by Rockgiran. Later he reappeared under the control of Amber Man (after being briefly taken over by the Gyandlar and used against the Machine Robo) and helped in the battle with the Gyandlar.

The character was based on the Rockdon toy (released in the West as Spikestone), which was released to tie in with the cartoon.

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The bestial Rockgiran was first discovered in a mine under a village in Cronos, appearing to save Rom's friends and the villagers from the rampaging Rockdon. Later he was summoned by Amber Man to help battle the Gyandlar.

The character was based on the Rockgiran toy (released in the West as Terra-Roc), which was released to tie in with the cartoon.

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The most commonly spotted of the Rock People, whole tribes made up entirely of Battle Rocks were living on Cronos - including a group who briefly kidnap Leina for benevolent reasons. Another Battle Rock was the estranged brother of Guri while an older example was the head of a mining settlement imprisoned by Diondra. Said village also included baby versions of Battle Rock. One Battle Rock, Marus, was experimented on by the Gyandlar and could (unwillingly) transform into a monster. Many Battle Rocks eventually participated in the final battle against Gadess' forces.

The character was based on the Battle Rock toy (issued in the West as Boulder), which was released to tie in with the cartoon.

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While seen more fleetingly, Mecha Rocks weren't uncommon on Cronos, working in mines and as part of the unit tasked with capturing Guri from the hospital in Korora. Later some joined up with Rom's troops at the Battle Base to combat the Gyandlar.

The character was based on the Mecha Rock toy (issued in the West as Nuggit), which was released to tie in with the cartoon.

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Despite being one of the larger Rock People types, Guts Rock was rarely seen in numbers - though some worked at a mining village, others were part of the posse sent to take Guri and others helped in the battle at Yamilan.

The character was based on the Guts Rock toy (issued in the West as Granite), which was released to tie in with the cartoon.

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