- Nice hairline! Does it come in any style other than receding?
Spyder to Seth

"Let's End This! Part Two" is the fifteenth and final episode in Season 1 of Mech-X4. It premiered on May 1, 2017.


With the fate of Bay City at stake, Ryan and the team fight to end the monster threat once and for all.[1]


Main Cast

Recurring Cast


  • This is the second part of the two-part finale.
  • This is the finale episode of Season 1.
  • This episode had a Live Chat during air.
  • While Seth was talking to MECH-X4, he mentioned all of their names but Spyder's, further showing that he hates him the most.
  • Grace woke up inside the robot, and found out who's controlling the robot.
  • Grace joined Seth because of the monster inside her brain changing her.
  • After being rescured, Grace lost her memory of Ryan being a technopath and being the pilot of MECH-X4, but only remembers that Seth was behind the monsters.
  • Ryan saved Cassie from getting hit by the monster.
  • Mark used the Mark-Mobile to take the monster down, by flying around it with a rope. However it came back up shortly after.
  • The Mark-Mobile was destroyed after the monster stepped on it.
  • Seth Harper was in the monster while the missile hit it.
  • In the ending we see a hand coming up from leftovers from the ooze, which has since been revealed as the introduction of the new villain Traeger.


Disney XD Logo
To view the Let's End This! Part Two gallery, click here.


Code: Let's End This Part Two

MECH-X4 116 Screen HD
My favorite episode is
Let's End This! Part Two


MECH-X4 Episodes
Season 1
Let's Call It MECH-X4!Let's Get Some Air!Let's Open The Monster Heart!Let's Be Idiots!Let's Survive in the Woods!Let's Get Our Robot Back!Let's Get the Big Bad!Let's Deal with Our Stuff!Let's Get Some Answers!Let's Go Clubbing!Let's Get Leo!Let's Dig Deep!Let's Destroy Some Ooze!Let's End This! Part OneLet's End This! Part Two
Season 2
Versus The New EvilVersus The DeepVersus The OutbreakVersus Harper's GhostVersus The MountainVersus The Dark NightVersus The Tech ArmyVersus TraegerVersus Velocity and VeracityVersus The ArcticVersus The Wolves at the DoorVersus The ThirtyVersus MiamiVersus The X-WeaponVersus SabotageVersus The Monster Within!Versus The BetrayalVersus HarrisVersus The InfectedVersus The End