Robot heroes in training Elmo, Cookie Monster, and Abby Cadabby use their STEM superpowers to solve wacky larger-than-life problems.
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Reach thousands of daily viewers · size 1200 x 200
Episode 1
They Sent Us a Pie!
A giant pie is sent to Pretty Big City to stop an asteroid… but the Mechas and friends have eaten the whole thing!
Episode 2
Dust in the Wind
The Singing Stone Heads are ready to perform at the Museum, but when they open their mouths, they sneeze instead of sing!
Episode 3
Pull Together
Ranger Nat is stuck at the bottom of the crevice, but the problem grows when Mecha Abby also gets stuck.
Episode 4
Lift Up and Lift Off!
Zee is ready to launch his rocket into space, but when the launchpad breaks, the rocket is launched into the farm instead.
Episode 5
That Ol' Time Rock Rolls!
When Big Old Boulder rolls down the hill towards the museum, Berta needs the Mechas help to keep it stable.
Episode 6
Make Like a Banana and Split!
It's Food Day in Pretty Big City, but the Mechas need to help when the banana atop the banana split statue is not split!
Episode 7
Magnet Mayhem
The magnet crane at the construction site accidentally turns on, sucking up all the metal, including the Mecha Builders!
Episode 8
Stop That Train
Roof is delivering eggs to Marwyn at the Train Station, that is, until the train pulls into the station and can't stop!
Episode 9
Picture Perfect Park Party
Hero Celebration Day is finishing with a slideshow of everyday heroes, that is, until the projector screen rips.
Episode 10
Sun Block
Pretty Big City is cooling off with an ice slide in the park, but the situation gets slippery when the slide starts melting.
Episode 11
Roll, Chickens, Roll!
Farmer MacBarm is hosting the Sunny Field Farm Chicken Roll, but the race gets off to a slow start when the chickens don't roll.
Episode 12
Ramp Up, Up, and Away!
Ranger Nat can't wait to see Pinecone's Comet, that is, until his telescope falls to the bottom of a cliff.
Episode 13
Yip Yip, Book Book!
It's the Pretty Big All City Read and Izzy and Barb are ready, that is, until all the books go missing!
Episode 14
Stick to It!
Pretty Big City finds itself in a sticky situation when the factory starts spewing super sticky slime everywhere!
Episode 15
The Treasure of Treetop Woods
Ranger Nat's hike turns to adventure when he finds a treasure map. The only problem is that he can't read it.
Episode 16
Zee Makes an Amazing Maze!
Zee and MacBarm are setting up their corn maze with the help of Zee's Zee Mobile... that is, until it breaks down inside the maze.
Episode 17
That's the Way the Windmill Blows!
The windmill isn't turning, which means Sunny Field Farm has no power. The windmill needs to turn again so Zee can launch his rocket!
Episode 18
Mecha Machine Makers!
Izzy and Timmy are making a bird caller for Grandma, but have trouble connecting pieces of their machine.
Episode 19
The Need for Feed
MacBarm is bringing food to his hungry chickens, that is, until all of the food falls out of his truck.
Episode 20
The Zipline Sisters of Treetop Woods
Grandma and her twin sister want to recreate their old zipline act, but quickly discover that the zipline no longer exists!
Episode 21
The Whatsacallit of Treetop Woods
Berta is opening an exhibit on the Whatsacallit of Treetop Woods. If only she could get a picture to prove it's real.
Episode 22
Nat in the Dark!
Gerry and Nat are leading the Treetop Troops on a hike, but Nat finds himself lost in the woods as it gets darker.
Episode 23
Let's Get Rolling!
It's MacBarm's croquet tournament and Zee made giant decorations but they're too big to get to the farm.
Episode 24
A Bit of a Stretch!
It's the opening day of the skyscraper and the Mechas need to put the sphere on top of the building before the ribbon cutting ceremony.
Episode 25
Moo-ving Day!
Zee's growth ray turns Moobert giant, but when a storm rolls in, the Mechas need to build a shelter big enough to fit her.
Episode 26
Follow That Breeze
After Ranger Nat's kite blows away in the wind, the Mechas and Timmy learn to build their own kite to find it.
Episode 27
Cross That Bridge
The train needs to cross the ravine, which becomes difficult when the Martians accidentally break the bridge.
Episode 28
Knock Knock! Who's There?
The Zee Mobile is great at counting the chickens at the farm, but won't stop crashing into and ruining MacBarm's barn door.
Episode 29
The Pinecone Palooza
Grandma and Timmy are entering the Pinecone Art Show by carving a sculpture out of stone… that is, if they can learn how to carve.
Episode 30
The Big Footed Cave Bird
Ranger Nat is hiking and comes across the Big-Footed Cave Bird, and realizes it can't get back into her home.
Episode 31
Yip Yip Tree Tree
When the ornaments on the Pretty Big City tree break, the Mechas must build new ones and save the holidays for their friends.
Episode 32
The Snowman Scarecrow
It's time for Zee and MacBarm's gift exchange, but the snowman scarecrow Zee made for MacBarm keeps blowing away!
Episode 33
All Mechas on Deck
Lloyd's testing a wind-up powered go-cart, but a problem arises when it keeps running out of energy.
Episode 34
Where There's a Wheel, There's a Way
Sif's coming in for a landing at the rocket launch site - until her rocket is pushed off course by a satellite!
Episode 35
Silly Hat Catastrophe!
Lloyd is selling silly hats at the factory, but when the hat machine malfunctions it starts raining silly hats on Pretty Big City!
Episode 36
Zee In a Bottle
Zee makes a giant rocket ship in a bottle, but things take a turn when he gets stuck inside!
Episode 37
MacBarm's Day Off
It's MacBarm's day off and Zee takes over harvesting carrots with his Zee mobile, but when it breaks, the work still needs to be done.
Episode 38
Playhouse Problem!
Ranger Nat is bringing a playhouse on the train for Timmy and Izzy, but it won't fit through the tunnel!
Episode 39
Can't Stop the Martians!
The Martians come to Pretty Big City but find themselves in need of help when they are unable to land their spaceship.
Episode 40
The Best Nest Test
Zee needs to communicate with Sif in outer space but can't because a bird has made its home on top of the satellite dish!
Episode 41
Get in Gear
Panic erupts in Pretty Big City when the big clock breaks and no one is able to tell what time it is.
Episode 42
Free-Wheelin' Ferris Wheel
Zee is showing off his inventions at his rocket-powered show, including his latest creation, a rocket powered Ferris wheel.
Episode 43
The Legend of Jack O'Lantern
It's Halloween and everything is set for the Zee Mobile to pull the haunted hayride… until it drives away.
Episode 44
The Mecha T-Rex
Timmy can't wait to trick or treat as a Mecha T-Rex, but his Halloween is almost ruined when he can't reach the arms to his costume.
Episode 45
The Escaping Cows of Sunny Field Farm
Zee's new drone accidentally doubles as a cow caller, and the cows keep leaving the farm to go see it. But how?
Episode 46
Measure for Measure
Marwyn attempts to make Pretty Big City's largest cookie, but to do so, he'll need a lot of help.
Episode 47
Special Delivery
The Martians want to help Lloyd deliver packages, but keep breaking them when they drop them from up high.
Episode 48
Super Duper Sled Slide
MacBarm and Zee built a slide that sends people all the way across the farm… which means people spend more time walking than sliding.
Episode 49
The Case of the Missing Crystal Pinecone
Izzy and Timmy go to dig up treasure at the top of Lawrence Pinecone's Statue's shadow… only to find that nothing's there!
Episode 50
The Pretty Big Thing
The mysterious "Pretty Big Thing" is scaring the people of Pretty Big City from going to work… but what is it?
Episode 51
Sticky Space Race
Zee's super sticky slime spills on Zee and MacBarm, leaving them stuck together.
Episode 52
The Big Ice
When Marwyn runs out of ice, the Martians send a giant hunk of ice. All goes well until the ice starts sliding towards the skyscraper!
Ryan Dillon
Mecha Elmo (voice)
David Rudman
Mecha Cookie Monster (voice)
Leslie Carrara-Rudolph
Mecha Abby Cadabby (voice)
Reach thousands of daily viewers · size 970 x 90
2021 · ★ 7.1
2015 · ★ 7.0
2017 · ★ 5.9
2012 · ★ 7.3
2017 · ★ 7.6
2022 · ★ 7.0
2010 · ★ 8.1
2002 · ★ 7.4
2013 · ★ 7.0
1995 · ★ 7.8
2000 · ★ 8.0
2010 · ★ 8.5
1985 · ★ 8.2
1984 · ★ 7.9
2001 · ★ 7.5
1999 · ★ 5.9
2012 · ★ 7.7
