Optimus Prime Robot — Blue, Dramatic, Digital Art, Autobot Logo

1024 × 768

Optimus Prime and Megatron — Black

1440 × 900

Optimus Prime Head — Blue, Dramatic, Digital Art

1280 × 1024

Damaged Robot Warrior — Blue

1920 × 1200

Robot Playing Guitar — Black

1680 × 1050

Robot Character Face — Purple

1920 × 1080

Robot Holding a Sword

1280 × 800

Red and Blue Robot — Dramatic

1500 × 800

Robotic Head and Torso — Blue

2560 × 1600

Two Robots Facing Off — Black

1920 × 1200

Robot with Smoking Guns

1109 × 832

Tumbler Robot — Black

1680 × 1050