Cartoon Scientist Character — Green, Playful

1600 × 1200

White Bird-like Creature — Green

1366 × 853

Cartoon Character with Beaker — Green

1280 × 800

Red Alien in Lab Coat

1024 × 768

Duck-like Character in Lab Coat

1680 × 1050

Homer Simpson in lab coat

800 × 600

Red Alien with Claws — Orange

1680 × 1050

Cartoon Scientist Character — Green

1600 × 900

Stick Figure Character — Olive Green

1920 × 1200

Cartoon Character with Headphones — Green, Calm

1280 × 1024

Cartoon Worm Character — Green, Angry, Comic

1229 × 768

Cartoon Worm Character — Green, Angry

1680 × 1050