"Let's Be Idiots!" is the fourth episode in Season 1 of Mech-X4. It aired on November 27, 2016 to 0.86 million viewers.
- Nathaniel James Potvin as Ryan Walker
- Kamran Lucas as Harris
- Pearce Joza as Spyder Johnson
- Raymond Cham as Mark Walker
- Ali Liebert as Principal Grey
- Peter Benson as Seth Harper
- Crystal Balint as Grace Walker
- John De Santis as Davage
- Bethany Brown as DJ Rats$z
- Jason Sakaki as Jimmy Wilson
- Jimmy Wilson, who was mentioned in the previous episode, he made an appearance in this episode.
| To view the Let's Be Idiots! gallery, click here.