Sazeku-Ba!: The World's Greatest

Sazeku-Ba!: The World's Greatest is the second movie of the Sazeku-Ba! Anime series. It took place during the Reign of Lord Tetsei Saga between episodes 16 & 17.

Summary
Sayuri and Suna are in the polar caps looking for some more Genzu Herbs. However, they are soon attacked by Bio-Warriors. They say they are looking for the greatest person in the world and so Suna says it is him. The 6 of them fight him for a while and he manages to beat them until they all clobber him. They then beat down on Sayuri. When Dr. Kochan examines them, Sayuri and Suna admits that they lied and that they know who the greatest in the world is.

Dr. Nefario gets curious and they say that it is a good friend of there's. Meanwhile, Tadashi is with Meika & Ayano. However, he starts to get worried and decides to go to the Polar Caps himself. He goes to his parents and they give him the last Genzu Herb just in case. He bids them farewell and the trio goes on with their own plans to the Polar Caps. Once there, they all search in different areas however, both Ayano and Meika were attacked. They were then subdued and outmatched and taken to the base. However, they were stopped by Riku who manages to beat them. He is then subdued when Hyeuz, Imafgyu & Tasagaragu all uses a tri-attack on him. Tadashi continues to look until he is ambushed by the 6 Bio-Warriors. They then realize that he is the one known as Tadashi Sakura. As they attack, Tadashi is able to handle the six of them with ease and destroys each one.

Once setting foot in the base, Dr. Kochan signals to Tadashi that it is a test. Tadashi is then seen fighting Hyeuz, Imafgyu and Tasagaragu. At first, he is getting thrashed until he uses the Body Massx2 to kill both Tasagaragu and Imafgyu. He then went into his Body Massx3-Multi Clone Barrage to kill off Hyeuz. Surprised, Dr. Kochan welcomed him to their base. When Tadashi arrives, he finds his friends all tied up in chains. He tries to save them but Dr. Kochan and Dr. Nefario captures him. Dr. Nefario explains to him why he is doing this and that he goals to become the smartest man with the greatest body. When the body transmission is underway, Tadashi is in extreme pain. Everyone is defenseless to save him but Tadashi manages to break out using the Full Body Mass. Impressed even more with his power, Dr. Nefario is more than determined to steal his body. When it reveals a giant brain in a giant metallic robot suit. Surprised, Tadashi breaks the other free. However, a mind-controlled Riku comes in and fights Tadashi. After a while of fighting, Sayuri kicks him from the back, bringing him back to normal. Dr. Nefario then prepares to fight Tadashi, Riku, Sayuri & Meika. Meanwhile, Ayano and Suna both handles off Dr. Kochan.

Dr. Nefario is too much for the four and they are getting their butts whooped. Tadashi goes into his Full Body Mass, and Riku uses his Dragon Sense. The two manages to beat down on Dr. Nefario a bit. After that, he gets angry and blows half of his base up. This also causes the death of Dr. Kochan in the process. He then beats down on Riku and Tadashi a bit more until Tadashi blows him in the sky with his Flaming Blade Slice. Angered, Dr. Nefario plans on blowing up the world. To stop this, Tadashi focuses all of his power while Sayuri, Riku and Suna all goes into his Full Body Mass and prepares for the Flaming Blade Slice-Multi Clone Attack. With the others soon defeated, Tadashi and his clones collides with Dr. Nefario. However, Tadashi was able to prevail and kills Dr. Nefario in the process. When Tadashi gets down, everyone congratulates him but Riku dismisses himself, vowing to get even with him someday. Meanwhile, the others goes and collects the Genzu Herbs and they are then at Tadashi's house warming up with some hot cocoa.