The Underwater Fortress Saluudo us an undersea base that was used by the bad guys in Mazinger Z.
Mazinger Z[]
Anime[]
Manga[]

So its kinda like Bardos Island, but different somehow?
In Volume 01 after Sayaka Yumi stops Koji Kabuto's spazz out in Mazinger Z another robot comes out at Suruga and its Garada K7 and Doublas M2 f--king up Japans military like its the opening to the Mazinger Z Anime. Baron Ashura is pleased and confident in his robots butt f--kery or Japan and Sayaka and Koji go over to f--k em up. Koji is suddenly better at driving this thing as he says it "responds to his will" like its the 2000 Inspector Gadget movie with Ferris Bueler. Garada and Doublas attack the Photon Lab but the lab has pop up missile launchers like its Computer Warriors or some sh-t and they hold off the Mechanical Beasts until Mazinger and Sayaka show up and f--k up the bad robots. Baron Ashura pulls a Cobra Commander and retreats to his Bardos Island base and tells Dr. Hell about it and the bad doctor wants to have Mazinger Z to conquer the world(Which kinda happens in Mazinkaiser OVA 1). Ashura wants to capture Koji and later Koji and Sayaka go back to living in their old house as its closer to where Mazinger is housed. Later, the Iron Mask dudes of Ashura attack and wanna take off Koji's head to remake his bod into one of them (Like in Riki-oh how they wanted to equip his body with his brothers head) and Koji fights em. After knocking off 1 iron mask, its hot an open head with brains out like in Hannibal and like liberals, they have no free will and just serve a demony bad guy. Koji slags 1 and more come in but Ankokuji comes outta the floor like Kekko Kamen and caps em. Because 1 guy has a few bullets, the Iron Masks (Is that where Pokemon 4ever got it from?) say they were beat and Baron Ashura sends Dogura S1 / Magura F2 to get Koji and surfaces the Underwater Fortress Saluud to launch em. At home, Koji calls the ambulance to save the Iron Mask guys as he don't wanna be a murderer, but Ankokuji sez its not murder if its self defense (Hear that commies? Zimmerman did nothing wrong! A Japanese cop sez so!). Then Dogura S1 / Magura F2 attacks and Shiro is glad as with all this Chaos, they can skip school tomorrow. Koji goes back in the house as Dogura S1 / Magura F2 f--k it up and flies out in the Hover Pilder. It follows him and burns the forest like in The DBZ Tree Of Might movie and Koji gets to the Photon Lab and Locks on to Mazinger Z. He remembers Juzo's words that he IS Mazinger Z when driving it and Koji fights Dogura S1 / Magura F2 but it splits in 2, grabs Mazingers arms, asnd goes for the head! But Koji slams em back together with Mazingers big black arms. Dogura S1 / Magura F2 flies up with Mazinger to kill Koji from the impact shock by Koji falling. Koji slams his head on the glass as I guess there's no seat belt and Sayaka in Aphrodite A comes out to Save Koji's big meaty a55. Koji gets up, slags 1 of em and cooks the other with BULESTO FAIYA! And Ashura b--ches about it.
In Volume 02 Boss, Mucha and Nuke try to f--k with Koji but he stops his bike sideways in the road (But not like that pose from Akira everyone rips off) and they wind in the water. Later at school a new student comes by and its Koji and Boss is p-ssed but Sayaka stops him. Teacher reveals Koji's the one who saved Japan and Boss is jealous as he thinks Sayaka will go for him (And in Mazinger Z Infinity: Its revealed that happens ands they b0ne). Meanwhile, Ashura summons Bamaras Y1 and Bazin B9. Back at School, Boss tries to hassle Koji but Koji counters and Boss wants to go out with Sayaka after school. Koji beats up Boss when Sayaka's not looking but when Boss tries to fight back, Sayaka looks and he gets f'd. The teacher gets Boss in trouble and then the Mechanical Beasts attack and Koji motorcycles to the lab. but Mazinger is already out and driven by Ashura and busts the city! Koji follows and at the lab Sayaka gets there but Dr Yumi sez Mazinger is still in the hanger. Ankokuji sez he saw Mazinger in town and they realize its a fake and Sayaka sends Boss and friends after Koji. Sayaka goes in an upgraded Aphrodite and as Koji follows Fake Mazinger, its back opens up and Iron Mask guys on Mechanical Steeds come out and Koji fights em. Then Boss and his droogs come by and Koji drives off and Fake Mazinger jumps to stomp Koji like its freekin Super Mario. But Aphrodite fires off one of her b00bs and blasts him back. Koji returns to the lab and Sewashi, Nossori and Morimori give Koji a new suit to use Mazinger Z better. Ankokuji tests it and beats on Koji but it does diddley d0ng and Koji beats him out easy. Didn't you have to save Sayaka and the city? Why are you j-rkin off with Ankokuji?! So Koji drives Mazinger out and Ashura calls the Mechanical Beasts to fight Mazinger. Ashura beats up and throws Aphrodite A but Mazinger saves her and is introduced to him/her. Koji tries a Rocket Punch but Bazin B9 f--ks with electromagnetic waves and f--ks it up. He tries Breast Fire but Bamaras Y1 grabs and lifts Mazinger so it can't nail em. Then Bamaras Y1 throws Mazinger and Bazin B9 uses Electricity too counter Earth's Gravity somehow and Mazinger goes high and lands on its feet hard so Koji gets f--ked. He/her sends Bamaras Y1 and Bazin B9 to bring Mazinger to Saluud but Koji turns on its arms and slags Bazin B9. Then jumps on Bamaras Y1 like a Mario game and uses Rust Hurricane on Fake Mazinger. He/her escapes by launching the head and a ship comes outta it and Koji busts the Fake Mazinger, which is just disguised Mechanical Beast.
In Volume 4 Ashura talks to Tauros D7, KingDan X10, Belgas V5 and Ghostfire V9, but he /she wants to use his/her daughters Gamia Q. He/.she drives his/her sub and sends em up and they come out of the water and a camper asks if they are ok. They slice off his head with their hair and he falls in his campfire(and is probably eaten by animals or people later(well, he IS cooked). at school later they go to see Koji when they do they try slicing him with their blade hair(Like Mao in riki-oh?) and Boss 's clothes get f'd. Ashura talks through em and sez they'd cut him to pieces like its Hokuto No Ken or something and they attack. Then this robot is f--kin up Tokyo and Sayaka goes in her Mech that's been rebuilt like 3x by now and is sliced in 2 by KingDan X10. Ghost Fire V9 cooks the city and Kingdan busts Aphrodite's head with a blade. At school, Boss's clothes get sliced off and he sez its becoming a Shameless School and they're doing Mazinger here, but Koji sez boss's gross bod isn't good enuff for Shameless School(Although there were some ugly mother f--ker in there) and Boss can barely read. then a Cameo by Mitsuko Yagyu IN THE NUDE, the Pilder comes in driven by Shiro and Koji throws 1 Gamia and the others chop her up. Shiro sez the Mechanical beasts are f-kkin up Japan like bad censorship laws and Ashura sez they f'd Sayaka's mech and his men are looking for her body but if she's alive, he's f--k her up. If he hands over Mazinger Z he/she well call off the attacks. Koi fights the Gamia's but Shiro slags em with the Pilder. Belgas goes to the lab and tells Yumi that if he hands over Mazinger Z, he/she will end their attacks on the Japan, and that Gamia Q's iced Koji. Koji gets back and Yumi has given up Mazinger as it was carried off by what looks like Drones and is gonna bring it to Saluud, but the Pilder comes by and he/she orders Belgas to slag it. Of course Koji gets in despite Belgas's detaching parts and he f--ks saluud up. Belgas fights Mazinger and Saluud sinks in the sea as Mazinger Z sinks to the bottom of the sea, but can take the miles of pressure, even on the pilder dome somehow. He hits the floor and its soft and he sinks in it and uses violent wind to raise the silt in the floor up and in the dust, crushes Belgas's head. Its remaining pieces reassemble and Mazinger comes out from underground and throws the rock Belgas was on and nukes it with Breast Fire. Ashura trys to ram Saluud into Mazinger and he catches it and swings it around like in Mazinkaiser vs The Great General of Darkness, so he/she sends Glossam X2 to buy time to get away. Its designed for underwater combat and fires missiles at Mazinger, grabs him in its jaws, throws him, then blasts with a super heated beam to heat up Mazinger and Cook Koji. Koji uses his own Breast Fire and it heats up and cracks and blows Glossam X2. Koji gets outta the sea and wonders if Sayaka was on Saluud but notes that if she was, he/she would have used her against him. Then Tauros D7 nails a hole in Mazinger gut and Ghostfire V9 Chains up Mazinger in a non SM way for Tauros D7 to penetrate him. Mazinger jumps, Ghostfire gets skewered, and Mazinger swings its chains to slam em both and they blow. then Kingdan X10 comes in with Aphrodite in its hand and Sayaka tied to a bed in its torso and demands that Mazinger come with them
In Volume 5 Mazinger Z goes on the water base Saluud and Boss is clinging to his leg as the base goes under da sea. Boss in an Iron Mask suit tells this guard its his shift and tells Koji that Sayaka is being cared for and they plan to try something at the right time. Later, 30 km off Ogasawara, Saluud is spotted as they tracked Aphrodite A's transmissions. Dr Yumi is there and hopes to save huis kid, but hopes she can forgive him if he has to send her to H E Double Korea to stop the Baddz from getting Mazinger. Later, Boss in Iron Mask sez to the guards "We got trouble" and when they come, Koji headshots em(So much for not wanting to be a murderer, wait, didn't that happen with Rick in Robotech?) and they go to save Sayaka. Boss stands guard and Koji sees she's bare a55 naked under the covers and Boss wants to see (You saw her nude b4 Koji!!). Meanwhile, a half hairs Baron Ashura is taking a shower and feeling his/her right b00b with his/her left hand and still wears a hood and we see his/her a55, when he/she gets a message saying the Japanese Navy tracked em with Sayaka's mech. He/she orders an attack and we never get to see his/her crotch. Saluud spins a thing to make a Whirlpool and Dr Yumi orders em to drop Depth Charges which f--ks out the artificial Island. Koji trys to stop Boss from seeing her nude but the ship jerks around and Sayaka falls out and wakes up and hugs Koji, b4 Boss tells her she's Nude. Saluud's island comes off and attacks the Japanese Military by flying around like Ginnai Doma's head and the underwater base is getting f--ked by the Navy. As they can't send Kingdan X10 underwater, they launch subs to fight and Sayaka wears an Iron Mask outfit and her and Boss fake moving prisoner Koji around to get to Mazinger. Guarding her is Gamia Q3 who I guess survived the last fight and fights Koji with a sneak twist, She's Nude under her outfit and her t-ts stun Koji and she gets a hair in his shooting arm. They fight on and the Navy f--ks out the enemy subs and goes in to end Saluud. Sayaka interferes in the fight and gets sliced and Koji tugs her cape to save Sayaka and Sayaka throws Koji his gun. Ashura is told the Saluud is too f'd to go on and he/she sez to ditch it and leave Mazinger and Kingdan X10. Koji shoots off Gamia Q3's hair and as she runs he splits her in half. He then is gonna take Saluud down and Sayaka sez her dad told her of swimming jets on Mazinger Z's Feet. Koji slags Kingdan X10 and gets its sword and busts through the ship to get Ashura but he/she sez its Koji who's going down cuz the ships nucular reactor will soon overload and runs off. The escape pods fire off and Dr Yumi has a few shot down but most escape. As he think he won't give up on her unless he sees a body, an escape pod poops up and Sayaka is in it and parachutes out. Mazinger busts through the base and uses BuLesTo FaiYa and gets out. On da Navy Yumi tells his girl the only way Koji can survive is the swim jets. Koji gets out but sinks in the floor. The ship blows and then Mazinger swims up as unlike Devilman, you can't kill the main guy.
Mazinger Z vs. Transformers[]

Wheeljack has seen his/her Transformers Zone!
In here its the base that Baron Ashura brings the Autobots to and has Dr. Hell say hoe evil Mazinger Z and is droogs are. After they fight Mazinger and the Autobots see he's good, the Decepticons go there and team up with the Dr which is odd as both the Transformers Comics and Shin Mazinger Shougeki! Z Hen repaint both Megaron and Dr H as fighting for the greater good(Like having No Heart in Care Bears as a hero fighting to save us from emotions).