LEGO SET 75434 - Alternate build | K-2SO
LEGO Set 75434-1 – K-2SO: All the Alternate Builds & Smart Mods You Can Make
When a set is as poseable and characterful as LEGO 75434-1 K-2SO, it practically begs you to tinker. Beyond displaying the reprogrammed Imperial security droid, this parts palette (black and dark bluish gray panels, Technic frames, click hinges, CCBS shells, and a sprinkling of accent colors) opens the door to creatures, weapons, and stability/poseability upgrades. Think of it as a compact character-modeling toolkit: the Technic core gives you structure and articulation; the panels let you sculpt smooth silhouettes; and the pins/axles make fast reconfigurations painless.
If you enjoy Star Wars droids, you’ll appreciate how well the set’s proportions translate into other tall, sinewy figures—and if you’re into sci-fi more broadly, you can re-skin that same skeleton for alien horrors or mechs. Prefer refining the original model? Small add-ons like a blaster or leg/head tweaks can dramatically change shelf presence and play value without a complete rebuild. Below you’ll find the best community creations available right now—one full alternate build that uses only K-2SO’s parts, plus two clever modifications that add functionality or detail. Each entry credits the designer and links straight to building instructions so you can dive in immediately.
Gallery & Instructions
Alternate Builds
Alien Xenomorph – K2SO Security Droid Alt Build
Designer: WillsBuilds 
Get the instructions: Alien Xenomorph – K2SO Security Droid Alt Build.
Modifications
K 2SO Blaster
Designer: mbaersch 
Get the instructions: K 2SO Blaster.
K-2S0 Mods (Legs, head, shoulders)
Designer: OrchardBuilds 
Get the instructions: K-2S0 Mods (Legs, head, shoulders).
