20 episodesFirst aired 9 September 2017
E1Sept 201721m
Ryan's attempt to level up at his new school is interrupted when the team must stop a super-powered enemy.
E2Sept 201721m
An item of immense power rests under the Bay, as does a terrifying new monster.
E3Sept 201721m
Ryan and the team must fight off a zombie horde.
E4Sept 201721m
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?
E5Sept 201721m
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.
E6Nov 201721m
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.
E7Nov 201721m
Ryan and Mark's fun day with their Dad is interrupted when a fighter drone created by Harris is mysteriously reprogrammed to destroy Ryan.
E8Nov 201721m
The team has their first real battle with Traeger while Leo is confronted with his past.
E9Nov 201721m
Veracity's first mission with the team could be her last when her attempt to give Mech-X4 a flight mode goes terribly wrong.
E10Nov 201721m
Ryan and the team take MECH-X4 to the Arctic for an epic showdown with Traeger.
E11Mar 201821m
Mark and others find Ryan in the top half of the robot. He is alive but very weak.
E12Mar 201821m
Ryan meets more of Leo's technopathy test subjects, including his birth mother.
E13Apr 201821m
Grace might relocate the family to Miami.
E14Apr 201821m
When the team split apart as Grace contemplates leaving Bay City, Traeger makes his move.
E15Apr 201821m
After a successful mission, the team finally gets a little chill time in Mech-X until they find a bomb on the X-Deck!
E16Jul 201821m
A traitor on Mech-X4 picks off unsuspecting team members one by one.
E17Jul 201821m
Ryan, Spyder, and Veracity attempt to sneak into a hospital to get the materials they need for a secret mission.
E18Aug 201821m
Ryan and what's left of his team take on Traeger and a traitor in Brazil.
E19Aug 201821m
With the world falling one city at a time, Ryan and the team retreat to the Thirty's secret farm.
E20Aug 201845m
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?