Icon-zenkaiger.pngThis article is about a/an episode in Kikai Sentai Zenkaiger.

No. 39-kai! Infinite Happy Birthdays! (無限あけおめ誕生会! Mugen Akeome Tanjōkai!) is the thirty-ninth episode of Kikai Sentai Zenkaiger. It features the debut of Battle Caesar Robo III, and the Gokaiger and Kyoryuger Sentai Gears and HaKaijuOh makes a brief appearance in this episode.


HAPPY BIRTHDAY!! December 12th is Kaito Goshikida's Annual Birthday Celebration Festival! Everyone's also waiting on Christmas, as colorful decorations start to cover the city. Having a birthday around Christmas just means having two fun celebrations in a row. What great news!! The Zenkaigers are getting another bonus just before the New Years. However, here comes Shougatsu World, who has the ability to make people forget the past year with just the ring of a bell. "Forget all the bad things from this year, and journey fresh into the new one!" "Forget about everything...! Tojitendo... the ongoing battle... your dad..."


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Guest Cast

Suit Actors

Form Changes and Collectibles Used

Sentai Gears

  • Zenkaizer - Kyoryuger, Gokaiger, Zenkaiju, Zenkaiju (Chou Zenkai Super Buster), Zenkaizer (Kikai Side)
  • Zenkai Juran - Zenkai Juran (Zenkai Finish Buster), Zenkai Juran (Kikai Side)
  • Zenkai Gaon - Zenkai Gaon (Zenkai Finish Buster), Zenkai Gaon (Kikai Side)
  • Zenkai Magine - Zenkai Magine (Zenkai Finish Buster), Zenkai Magine (Kikai Side)
  • Zenkai Vroon - Zenkai Vroon (Zenkai Finish Buster), Zenkai Vroon (Kikai Side)
  • Twokaizer - TwokaiCutanner, TwokaiRicky, Zenkaiju, Zenkaiju (Twokaizer Rex Refreezer), TwokaiRicky (Kikai Side), TwokaiCutanner (Kikai Side)

Zenryoku Zenkai Cannon Summons

Elements/Homages to Super Sentai

  • The Sentai summoned from Kaito are red and white Sentai warriors, an allusion to his color scheme as Zenkaizer, probably a nod to how this episode celebrated Kaito's birthday.
  • Great Shougatsu World trapping ZenkaiOh JuraGaon in form of a kagami mochi is a reference to what OmochiZord did to Buster Hercules in Tokumei Sentai Go-Busters episode 45.
  • The tiger mascot summoned by Great Shougatsu World did Gao White's role call pose.
  • Shortly after starting the Gokaiger Gear effect, Vroon can be seen moving his arm in a circle like Luka Millfy.
  • When the Kyoryuger Gear is used, for the duration of the effect the standby music of the Kyoryuger transformation plays in a loop.
  • The Sentai Gears used relate to teams whose main goal other than fighting their respective villain groups was also to search for powers to help in defending the earth.


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  • As part of Super Hero Time, this episode aired alongside Kamen Rider ReviceIcon-crosswiki.png episode 14, The Commander Is...a Deadman!?Icon-crosswiki.png
  • This is the first episode since Episode 33 where the Zenryoku Zenkai Cannon's Legend Ranger summoning power is used.
  • As of this episode, all of the Legend Ranger Sentai Gears have been used at least once, though the Lupinranger and Patranger Gears have yet to debut in a normal episode.
  • For the first time since its debut, the Zenryoku Eagle appears without combining into Zenryoku ZenkaiOh.
  • This episode is set on December 12, 2021, the same as its airing date.
  • Kaito is 21 years old as of this episode.

External links


Logo-supersentai.png List of Kikai Sentai Zenkaiger Episodes Icon-zenkaiger.png
Episodes 1-10

No. 1-kai! The World of Kikai is Kikikaikai!Ep. 1: You too can Change Zenkai! (Transformation Course) • No. 2-kai! The Gao Beast is Troublesome!Ep. 2: Zenkai Gattai! JuraGaon! (Transformation Course) • No. 3-kai! A Serious Witch!Ep. 3: Let's Go! Zenkai Combination! (Transformation Course) • No. 4-kai! It's Huge and Noisy!No. 5-kai! A Sushi Tournament!No. 6-kai! Unpleasant and Mysterious Garbage Handling!Kikai Sentai Zenkaiger The Movie: Red Battle! All Sentai Rally!!Kikai Sentai Zenkaiger Spin-Off: Zenkai Red Great IntroductionNo. 7-kai! The Prince of the Demon World is Short-Tempered!No. 8-kai! Door to Door from Another World?!Ep. 4: Change to Twokai! Twokaizer! (Transformation Course) • No. 9-kai! World Pirates, Pleasant Twokai!No. 10-kai! Blue Sky Day and Night!

Episodes 11-20

No. 11-kai! Everyone's Playing Tag?!No. 12-kai! Super Slow Snail, a Mussel!No. 13-kai! Recycling Once Again!No. 14-kai! Duel! Zenkai VS Twokai!No. 15-kai! Tune in! A Sharp Turn into Retro!No. 16-kai! It's a Magnet at its Limit!No. 17-kai! Nununu Occult Club!No. 18-kai! Life is Short, Fall in Love at Full-Force!No. 19-kai! Zenkai Change, Super Zenkai!Special Chapter: The World Pirate is Coming, Intersecting WorldsIcon-crosswiki.pngNo. 20-kai! Swordsman and World Pirate, A Brother's Promise.Saber + Zenkaiger: Superhero SenkiIcon-crosswiki.png

Episodes 21-30

No. 21-kai! Giant Monsters of Great Destruction!Ep. 5: The Strongest! ZenKaijuOh! Super ni yohohoi! Zenkai! (Transformation Course) • No. 22-kai! Let's Have a Bullfighting Party!No. 23-kai! Three Great Combos, The Biggest Battle on Earth!No. 24-kai! The Invasion is Complete! Can You Recapture it?!No. 25-kai! Start Over! Zenkaiger-kai!No. 26-kai! Remodeled Prince and Dark Surgeon!No. 27-kai! A Great Voyage Through Seven Worlds!No. 28-kai! Weekly Shonen Manga World of Great Illustrations!No. 29-kai! Do You Know The Prince's Aim?No. 30-kai! Is the Machine Next Door Persimmon-Eating Destruction?!

Episodes 31-40

No. 31-kai! Full Combination! New Release!No. 32-kai! Sakasama Gets Angry! Is That a Monkey?No. 33-kai! Great Teacher Demon Master!No. 34-kai! Pumpkin Carving Competition!No. 35-kai! Diamond ◆ A Big One?!No. 36-kai! The Surprisingly Shocking Great Kidnapping!No. 37-kai! Grudge Radish, Deep Roots!No. 38-kai! Your Ancestors! Great Spirit WorldNo. 39-kai! Infinite Happy Birthdays!No. 40-kai! Rescue My Father, One Chance!

Episodes 41-49

No. 41-kai! The Slippery Depths of the Noodle Swamp!No. 42-kai! New Hero! Secret Meeting!!No. 43-kai! The Weather Chicken's Head is Directly Opposite the Wind!No. 44-kai! SD Equals Small Plus Deformed?!No. 45-kai! Is it the Lowest Fortune?!