YMMV / Chou Sei Shin Series

• Complete Monster:
  • Chou Sei Shin Gransazer: Belzeus is the true mastermind behind Warp Monarch's invasion of Earth, smearing humans as descendants of the Bosquito in order to justify a cleansing of the planet so he can take it over and use it as a foothold to become a Galactic Conqueror. To further incentivize Warp Monarch to attack, Belzeus tricks his subordinate Luka into using her life force to bring back the Bosquito so it will overrun Earth. Eyeing Ran as a threat to his plans, Belzeus has his minion Brighton pose as a peace ambassador and say Ran is a descendant of the Bosquito, lying that the Warp Monarch will cease their invasion if she is killed. After having one of his minions suicide bomb Ruby before she could reveal the truth, Belzeus arrives on Earth personally to murder Ran and prevent any chance of the truth coming out before the Warp Monarch's fleet wipes out humanity.
  • Genseishin Justiriser has this sibling duo:
    • Kaiser Hades is an intergalactic warlord bent on conquering the universe and crushing the two planets that stand in his way, Earth and Riser. After destroying Riser, Hades wipes the memories of its hero Rigel to turn him into his loyal minion. Defeated and imprisoned on Earth by the Riser heroine Nolun, Hades resumes his conquest once he's unsealed in the present day, during which he subjects entire cities to repeated kaiju onslaughts and kills his own minions to inspire fear in his other subordinates. For his final plan, Hades attempts to destroy the Earth using the Magneshieldar, a weapon which first emits a powerful shockwave to raze everything on a planet's surface before drilling to the planet's core and causing it to implode on itself, to ensure the world is rendered completely lifeless. After capturing Mio, Hades traps her inside the Majin Statue and tries to trick her Love Interest Shinya into killing her.
    • Majin Daruga, later known as Dark Demon God Kurogane, is the older brother of Kaiser Hades and leader of the Daruga Imperial Army, as well as the one truly responsible for Planet Riser's destruction. Invading and destroying planets across cosmos, Daruga turns his army to Earth after taking an interest in the Justirisers' power. After stealing Shiro Jinno's Riser Power, the newly empowered Kurogane sends hordes of Bulgarios to lay waste to Tokyo and destroy everything in sight, in order to distract the Justirisers while he charges his Gigatron Cannon to destroy the planet. When the Gigatron Cannon is blown up, Kurogane assumes his gigantic true form and goes on a rampage, intent on ravaging Earth so he can rebuild it into the seat of his new empire.
  • Chousei Kantai Sazer-X: King Neo Descal is the ruler of Neo Descal and the one behind their galactic conquest, during which he had entire planets bombarded into darkness in the name of making the universe become one. Having sent Garade and Grouza back in time to stop Sazer-X and keep history the same, King Neo Descal marks his own arrival in the past by executing Garade for his failures. He then brainwashes his ancestor Cyclead and uses him to distract Sazer-X from his true plan—to use the Dark Alumer to terraform Earth with darkness and exterminate its inhabitants. He later executes his loyal right-hand woman Barreda for simply being of no more use to him before merging with Dark Geran to personally ensure Earth's devastation. Although he claims to want to bring peace, it's pointed out that all his plan will really do is dominate everyone with his own ego.
• Cult Classic: It was nowhere near as popular as the Super Sentai series it sought to emulate, but the Chouseishin Series has still picked up a strong following for its excellent special effects and creative takes on the Sentai genre.
• Evil Is Cool: One thing Chouseishin does right is having intimidating villains with badass designs. Sazer-X in particular is notable for giving nearly as much focus to its villains as the heroes.
• Visual Effects of Awesome: As to be expected of something from Toho, the mecha and kaiju fights in Chouseishin are very well done, especially for a TV series made in the early 2000s.