Episodes
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1. Versus the New Evil
Ryan's attempt to level up at his new school is interrupted when the team must stop a super-powered enemy.
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2. Versus the Deep
An item of immense power rests under the Bay, as does a terrifying new monster.
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3. Versus the Outbreak
Ryan and the team must fight off a zombie horde.
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4. Versus Harper's Ghost
Ryan is bombarded by visions of Harper. If Harper is still alive, Ryan must make a difficult choice: save him, or destroy him once and for all?
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5. Versus the Mountain
Ryan finally gets a lead on his biological father, Randall, only to find him in mortal danger and must race against time (and a collapsing mountain) to save him.
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6. Versus The Dark Knight
When a new monster creates a city-wide blackout and disables the MECH-X4, the team must figure out how to get the robot working again to stop the beast from completing its mission.
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7. Versus The Tech Army
Ryan and Mark's fun day with their Dad is interrupted when a fighter drone created by Harris is mysteriously reprogrammed to destroy Ryan.
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8. Versus Traeger
The team has their first real battle with Traeger while Leo is confronted with his past.
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9. Versus Velocity and Veracity
Veracity's first mission with the team could be her last when her attempt to give Mech-X4 a flight mode goes terribly wrong.
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10. Versus The Arctic
Ryan and the team take MECH-X4 to the Arctic for an epic showdown with Traeger.
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11. Versus the Wolves at the Door
Mark and others find Ryan in the top half of the robot. He is alive but very weak.
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12. Versus the Thirty
Ryan meets more of Leo's technopathy test subjects, including his birth mother.
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13. Versus Miami
Grace might relocate the family to Miami.
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14. Versus the X-Weapon
When the team split apart as Grace contemplates leaving Bay City, Traeger makes his move.
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15. Versus Sabotage
After a successful mission, the team finally gets a little chill time in Mech-X until they find a bomb on the X-Deck!
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16. Versus The Monster Within!
A traitor on Mech-X4 picks off unsuspecting team members one by one.
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17. Versus The Betrayal
Ryan, Spyder, and Veracity attempt to sneak into a hospital to get the materials they need for a secret mission.
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18. Versus Harris
Ryan and what's left of his team take on Traeger and a traitor in Brazil.
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19. Versus The Infected
With the world falling one city at a time, Ryan and the team retreat to the Thirty's secret farm.
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20. Versus The End
A super-charged Mech-X4 races around the world to defeat Traeger's beasts, and Ryan must make one of his toughest decisions yet: save his friend or save the world?
Episode information from TMDB. Air dates refer to the original broadcast or release.