Rock-a-Bye, Alpha 5
3, Episode 7
Episode Guide
Oily to Bed, Oily to Rise
Where in the World is Alpha?
10 Somnibot Toy Version

Somnibot's upgraded form before re-entering the Power Chamber.

4 Somnibot

Somnibot flying backseat on a Quadrafighter.

Rock-a-Bye, Alpha 5 is the 7th episode of Power Rangers Zeo: Revisited.



"Okay, I'll go!"

Alpha 5 gets overworked from constant monster and Cog attacks that have been occurring for two weeks. As a result, he gets incredibly sleepy, to even Zordon's concern. Little Alpha is thus run ragged, exhausted by both his superhero duties and those of his normal life.

Mondo notices the situation and young Alpha's weakened, sleep-deprived state, and decides to assist a fellow robot by asking Klank and Orbus to assist him in creating Somnibot, who can put people and machines to sleep with her lullabies sung with her beautiful voice. She is told to go to Angel Grove and infiltrate the Power Chamber to help Alpha. She is given a map of the Chamber by Mondo and Machina and sent to Earth to carry out this mission.



"Yeah, Zordon, look at him. He looks like he's about to crash, if you pardon the pun."

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Billy watches as Alpha is sung to sleep.


Somnibot accidentally gives some people in Angel Grove Park naptime.


Alpha, losing sleep, trips over something and almost smashes a computer console.


Somnibot wakes up a Quadrafighter pilot and tell him not to fall asleep at the wheel.


The Rangers rush up to Alpha, while Tanya asks him if he is okay.


"I feel so sleepy, Rangers..."


Alpha discussing his dream with Detective Stone.

Alpha 5 has become incredibly sleepy lately, and he is starting to get extremely tired and overworked from several Cog attacks; they have been occurring for two weeks straight. At the Youth Center, the teens discuss what has been happening to Alpha, with Rocky and Kat saying that between working in the Power Chamber, fighting monsters and just overworking himself in general, Alpha hasn't slept well in weeks. Curtis and Richie ask if robots sleep the same way humans do so, and Kim and Billy both state that Alpha actually can sleep in a similar manner to humans, with Tommy replying that he saw Alpha sleep in his bedroom before.

With even his family and himself concerned over the little royal robot's health, King Mondo realizes the situation and orders Klank and Orbus to assemble Somnibot, a robot that can put both human and machine to sleep with her beautiful singing voice (what Zordon and Billy both refer to as a "harmonic sound weapon"). She is then tasked with infiltrating the Power Chamber and singing Alpha 5 to sleep, but the sleep-inducing robot falls in love with him when King Mondo presents information on Alpha to her. On her way to the Chamber she tries to think of a lullaby to sing just for Alpha, ironically putting everyone around her to sleep in the process with her singing and servomotor movement. She calls for a Quadrafighter to send her to the Chamber faster. When she gets to the Power Chamber after travelling through the long corridors, she uses the Dream Crystal as a key to get inside, the crystal possessing the same wavelength and properties as the Zeo Crystal.

Cogs are mysteriously sent down, not by King Mondo but by King Aradon, that serve as a diversion for the Rangers so Somnibot can perform her mission without interference. The Rangers place Alpha on the medical table (which will serve as a makeshift bed), place a blanket over his sleeping form and tuck him in after teleporting into the Chamber and being informed of the attack by Zordon. Bulk and Skull are even contacted by Kimberly and Katherine at their newly-opened detective agency in their panicked state, but their efforts to wake the sleeping robot are to no avail. Unfortunately, Somnibot's plan takes a devastating turn when Alpha turns ice-cold; his body temperature is dropping. Heaters are placed in and around Alpha's bed to keep him warm as he sleeps, however, and his body temperature is stabilized. The little robot sleeps peacefully throughout most of the night; he has an unseen nightmare but is comforted and lulled back to sleep by Somnibot. The Rangers and their guests are relieved.

In the dream world, Alpha finds himself on a beautiful, fertile, Earthlike planet. He suddenly hears three voices, one male and two female, that welcome him and explain that this place will be in his future. In the Power Chamber, Delta 4 displays a lot of jealousy towards Somnibot throughout the night, but Somni advises Delta to head to bed herself. On the videophone, King Mondo sends a transmission to the Power Chamber. Somnibot confirms that her mission is a success, but Alpha is to be kept warm as he sleeps peacefully. On the Moon, even Zedd, Rita, and the rest of the Moon Gang are worrying themselves sick over Alpha, but Somnibot reassures them too that the little robot just needs some rest and not to rouse him.

King Aradon, Mondo's rival, sends down a monster that the Rangers must battle. The monster, named Granitor, is sent to Angel Grove Park. The alarm goes off, but Alpha does not stir from his sleep except for some small moaning.. Zordon informs that Granitor is very strong, but can be weakened with repeated blasts from the Zeo Blaster. Somni offers to keep watch over Alpha, in order to make up for almost causing Alpha to permanently shut down. The Rangers get to Angel Grove and fight the monster, eventually weakening it with the Zeo Blaster. Upset, Aradon makes Granitor grow, and the Rangers summon the Zeo Megazord. The Rangers defeat the monster after a long and difficult battle that surprisingly goes on through moonrise, and then teleport back to the Chamber to check up on Alpha, but Somnibot uses her hypnosis ability to command the Rangers to not disturb Alpha and prepare for bedtime themselves so they can join Alpha in his dreams. They comply to her request and head to their chambers. Mondo and Machina are pleased with Somnibot.

Somni then sings her song and puts the Rangers, Bulk and Skull, who are now all in pajamas, under her sleeping spell as well. When Zordon, worried, questions this she explains that it is "for the best". But when Aradon's monster attacks the city during the night, having somehow survived the previous megazord finisher, the Rangers have no choice but to wake up and defeat him again. The Rangers then return to their bedrooms in the Power Chamber and, tired from the fight, fall into a deep sleep after Somni sings her song again. The Power Chamber goes silent as everyone is put into the dream world.

After Alpha finally awakens to everyone's elation and relief the next morning, the Rangers, Bulk, Skull and Jerome meet in the Power Chamber and comment on how glad they are for Alpha to have finally been allowed to have a good night's sleep thanks to the Machine Empire's help.

Knowing this, Somnibot later defects to the Rangers' side after realizing that the Machine Empire is cruel towards its citizens - despite the Machine King and Queen worrying over Alpha's sleep deprivation at the beginning of the episode. However, the Rangers and Alpha firmly believe the Empire can change for the better.




  • First appearance of Somnibot; she appears next in Machine King for a Day and will serve as an ally to the Rangers and as a love interest for Alpha 5.
  • First appearance of the "The Private Eyes Have It" detective agency, run by Bulk, Skull and Det. Jerome Stone. Bulk & Skull begin their run here as freelance private investigators, which will last until "Rangers of Many Worlds"; however, they go back to the agency (this time without Stone) in several episodes of Aero.
  • Kat returns from her training in this episode, and becomes worried when Alpha 5 is put under Somnibot's sleep spell.
  • Finster does not appear in this episode, though he is mentioned by Rita when she asks Somnibot if Alpha is okay.
  • Bulk, Skull, and Jerome know the location of the Power Chamber by this time.
  • In the scene where Somnibot goes into the Chamber to put Alpha to sleep, her successful attempt to put the little robot to sleep is sung to the tune of Brahms' "Lullaby", rather than "Rock-a-Bye Baby" like in the Prime Reality version. The same song is played on a music box (given to Somnibot by Queen Machina) in Alpha's makeshift bedchamber to keep him in the dream world until the next morning, and is used as Somnibot's leitmotif. The lullaby's melody is one of the most famous and recognizable in the world.
  • Alpha's dream of living a peaceful life comes true in the final episode of Power Rangers Lost Galaxy: Revisited, where the "beautiful and fertile Earthlike planet" is revealed to be Mirinoi. The only difference is that he has a much stronger and more advanced-looking body in the LG Revisited finale.


Klank: Oh, Prince Sprocket, Queen Machina, Princess Circuitrina! Oh dear, they've all fallen fast asleep! Your Majesty, please wake up! I have important news!
Mondo: (waking) You know not to disturb my sleep, but I'm awake now, so what is it?
Orbus: We have assembled the monster you asked for.
Klank: We call her Somnibot.
Mondo: Great! Somnibot's lullabies will allow Alpha 5 to get a good night's sleep tonight! Klank, will you come here?
Klank: Yes, Your Majesty?
Mondo: Teleport Somnibot to Earth immediately. We must begin before the Rangers can figure out what's happening to him.
Somnibot: (sleepy) Sounds good to me.
Circuitrina: Hey Somnibot, here's some info on Alpha!
(Circuitrina holds up a holographic projection of Alpha 5; now mostly alert, Somnibot is in love.)
Somnibot: He's so cute! What about him, Your Highnesses?
Sprocket: He's having problems sleeping. You've been assigned to help him.
Somnibot: All right, I'll go!

Zordon: This is Somnibot, King Mondo's latest creation. Her sleeping spell is very powerful.
Rocky: Mmmmm, a sleeping spell sounds very good for Alpha right about now.
Zack: Yeah, Zordon. I mean, look at him. He looks like he's about ready to crash, if you pardon the pun.
Zordon: Hmmmmmm. Okay, don't defeat her necessarily, then, but keep her at bay until we figure out how to solve Alpha's sleep issues.
Kat: Zordon, what's in her hand?
Kim: It looks like some kind of map.
Detective Stone: It was a spell, Alpha.
Alpha 5: One I wanted to be placed under, Jerry. I saw an amazing world, much like Earth. I heard some voices calling me, telling me the world I was seeing was where I would live sometime in the future.


  • In the American footage, Somnibot has the Command Center map with her, but it is missing in the Super Sentai footage.
  • When Alpha finally falls asleep and Somnibot drops him to the ground after being discovered by the Rangers, you can clearly see the floor pad that Alpha has to land on in one shot.
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