Optimus Prime concept art

3508 × 2480

Transformers concept art

1366 × 768

Decepticon robot concept art

1280 × 1024

Robot mecha design sheet

2048 × 1322

Red mecha robot with human figure

816 × 1000

giant robots in a ruined landscape

1920 × 1080

mecha robot design sketch

1144 × 772

Vic Viper mecha design

2356 × 3032

Dan mecha design sheet

2265 × 1698

giant robot in dark city

1920 × 1200

Gundam concept art

1300 × 800

Mechanical Crab Robot — Brown

1024 × 768