Zenkaiger

Kikai Sentai Zenkaiger (機界戦隊ゼンカイジャー Kikai Sentai Zenkaijā), translated as Machine World Squadron Full Throttle Ranger, is the 45th season of Super Sentai.

The show's theme is robots and machinery, celebrating Super Sentai's 45th anniversary with heroes and items based on past Sentai Robots and Ranger teams.

On March 7, 2021, the series premiered on the Super Hero Time block alongside Kamen Rider Saber after Mashin Sentai Kiramager concluded on February 28, 2021. After Saber's finale, Kamen Rider Revice joined Zenkaiger in the Super Hero Time block.

Plot
In this story, our heroes will use full-force full-throttle (全力全開 Zenryoku Zenkai) to stop the enemies who are trying to destroy the parallel universes. One hero known as Zenkaizer, with a heart of justice, will stand up to a preposterous giant mass of evil who has managed to break into their home world. Fighting alongside him are four robotic lifeforms.

Why It Rocks

 * 1) The idea of a Sentai tem only having 1 human ranger with the rest being robots was an awesome idea that was executed very well, feeling like an evolved version of Doubutsu Sentai Zyuohger.
 * 2) *They also gain certain powers from each pervious Sentai, feeling like an equivalent to Kamen Rider Zi-O.
 * 3) Every character in this show feels memorable and charismatic in their own separate way, making the episodes much more fun with their great chemistry.
 * 4) *Kaito Goshikida/Zenkaiser is the hyperactive, but lovable White Ranger, being based off of Akaranger/Big One from the first two Sentais: Himitsu Sentai Goranger and JAKQ Dengekitai.
 * 5) *Juran/Zenkai Juran acts as the party-loving/fatherly Red Ranger of the group, being based off of Shinka Gattai DaiZyuJin from Kyoryu Sentai Zyuranger.
 * 6) *Gaon/Zenkai Gaon is the cheerful/animal loving Yellow Ranger, being based off of Hyakujuu Gattai GaoKing from Hyakujuu Sentai Gaoranger.
 * 7) *Magine/Zenkai Magine is the shy, but extraordinary Pink Ranger, being based off of Majin Gattai MagiKing from Mahou Sentai Magiranger.
 * 8) *Vroon/Zenkai Vroon is the curious comic relief, being the Blue Ranger based off of GoGo Gattai DaiBouken from GoGo Sentai Boukenger.
 * 9) *Zox Goldtsuiker/Twokaiser is the swashbuckling, but rebellious Sixth/Gold Ranger based off of Gokai Red from Kaizoku Sentai Gokaiger.
 * 10) *Stacy/Stacaesar is the mysterious Evil Ranger, being based off of Battle Japan from the first "Super" Sentai Battle Fever J.
 * 11) Most of the supporting characters are also very popular amongst Super Sentai fans, including Yatsude Goshikida, Secchan, Flint Goldtsuiker, Cuttaner and Ricky.
 * 12) A lot of the aesthetics of this show is very well thought out and designed, providing a good use/variety of color.
 * 13) There are a lot of references to past seasons with the aesthetics, such as each of the ranger suits, the super forms/ZenkaijuOh being based off of Dragon Caesar and V-Rex, Cuttaner and Ricky being based off of Samurai Sentai Shinkenger and Chouriki Sentai Ohranger, and Battle Caesar Robo being based off of Battle Fever Robo.
 * 14) This is the first time we've had a Sentai with a non-red leader, since GekiYellow from Juken Sentai Gekiranger.
 * 15) *This is also the first time we've had a Sixth Ranger never become part of the main team, since TimeFire from Mirai Sentai Timeranger.
 * 16) *And finally, this is the first Sentai season to not have a Red Ranger be the centerpiece, which is a fresh start to the franchise and is quite decently executed.
 * 17) The music in this show is fantastic, with the opening being very high energy and a lot of the insert songs sounding similar to scores used in pervious Sentais.
 * 18) Almost every episode in this show is enjoyable, notable examples being No. 1-kai! The World of Kikai is Kikikaikai!, No. 8-kai! Door to Door from Another World?!, No. 24-kai! The Invasion is Complete! Can You Recapture it?!, and No. 30-kai! Is the Machine Next Door Persimmon-Eating Destruction?!.
 * 19) Kikaitopia Dynasty Tojitendo, despite not getting to do much, are very memorable, funny, and even threatening at times which works for the show.
 * 20) And to top it all off, this show aired alongside Kamen Rider Revice, so far a great Kamen Rider season.

Bad Qualities

 * 1) It did air along with Kamen Rider Saber, the series which wasn't very well received, Thankfully, the crossover episode they had was entertaining.
 * 2) Gaon was REALLY unlikable in the first half as he acted really antagonistic towards kikainoids for no reason, which screwed the team over at times. Zox and Vroon may also fall under this category, as Zox has a tendency to act as a Gary Stu at times, while Vroon's curiosity (at least initially) could just make him a bit obnoxious and outlandish at times.
 * 3) They teamed up with Kamen Rider Saber in a movie called Saber + Zenkaiger: Superhero Senki, which the film itself isn't executed very perfect due to it mostly pandering to the Rider portion.