LEGO Sci-Fi MOCs
Sci-fi heroes in LEGO with free instructions: Master Chief from Halo, Fallout power armor, the Predator, RoboCop, the T-800 Terminator, a Warhammer Space Marine and more. Each is a fan-designed MOC in standard LEGO pieces with 3D steps and a full parts list.
Unofficial fan builds, not LEGO sets; the games, films and characters belong to their owners.
Building guideARC Raiders Leaper114 pieces · 11 steps
Building guideFallout Power Armor (T-60)123 pieces · 12 steps
Building guideMaster Chief (Halo)133 pieces · 12 steps
Building guideSpace Marine (Warhammer 40,000)130 pieces · 12 steps
Building guideRoboCop91 pieces · 9 steps
Building guidePredator141 pieces · 13 steps
Building guideThe T-800 (Terminator 2)138 pieces · 16 steps
Questions
Is there an official LEGO Halo or Fallout set?
No. LEGO makes neither; these are free fan-made MOCs designed from standard bricks and plates.
Can I ask for my own sci-fi build?
Yes. Describe it in "Ask for any build" and Mister Blocks designs it in real pieces with instructions.