Person Using Portals — Gray, Humorous

1280 × 1024

Silhouette Ninjas with Portals

1280 × 800

Person Escaping Ninjas — Gray

1680 × 1050

Ninjas and portals

1366 × 768

Cat in a Maze

1280 × 1024

Person Escaping Ninjas

1680 × 1050

Silhouetted Ninjas — Black, Humorous, Illustration, Ninja

1024 × 819

Silhouetted Ninjas — Gray, Playful

1280 × 1024

Ninjas Falling Through Portals

1280 × 800

Sonic the Hedgehog — Gray

1280 × 1024

Portal game quotes and icons

1280 × 1024

Zim Riding a Pig — Gray

1308 × 993