It’s not everyday that you can trace the evolution of a LEGO design by a builder through their photos. But Bartosz Sasiński has the development of his four M-Series mechs well-documented. Their first addition, the M-1, was posted over a year ago. And it features chunky armor and stable click-joints. As a result, the build looks sturdy, with some interesting textures running up the torso and around the cockpit’s exterior. But more than anything, that striking color scheme of greens, white, and dark gray make this chunky boi pop.

Fast forward to earlier this month, and Bartosz returns to the mech design with some significant changes. The most prominent of those changes is definitely the new, shiny golden “eye” at the mech’s center. The vibrant color scheme has been changed out for a near-solid tan. However, there are some patches of light gray, showing some wear on the suit. The basic click-hinge joints have been replaced with ball joints, capable of holding up the clearly lighter arms and torso. The detailing around the length of the torso has grown more complex, excellently using shadow amid the monochrome palette.

Next up is M-3, sporting a new azure and white color scheme. But more stunningly, the complexity of the hinges has skyrocketed! The mech’s legs look almost deer-like, lacking the bulky armor of previous iterations. Combined with the skinny arms, the M-3 really showcases all the interesting connections that bring it together. And with that superb hand design and the beautiful use of the anti-stud (or the texture from the underside of a plate), this is definitely my favorite of the four suits.

And finally, we arrive at the fourth mech in this series. The M-4 feels very much like the culmination of the build themes from the previous three. The chunky armor returns, with its interesting angles leading the viewer up to that same golden “eye” from versions 2 and 3. Bartosz has returned to a monotoned build, going full out in light gray. But this time, it’s for a functional reason, as they explain in the comments that this color allows for near-limitless parts options. Those parts are put to good use, creating some great textures around the shins and lower torso. Once again, the anti-stud is used to excellent effect. And the hand design of the M-4 is almost scary. I hope to see an M-5 in the near future, continuing the evolution that I’ve enjoyed thus far.