This coloring page features the main villain of Monsters vs Aliens, Gallaxhar. He is a large purple alien with multiple eyes. He has a cape draped around his shoulders and a long, spiked tail protruding out behind him. With laser beams shooting from his eyes, Gallaxhar is a formidable foe who leads the alien forces and is responsible for abducting humans to use as his guinea pigs. To color this picture, you could use bright and bold shades of purple, giving Gallaxhar's skin a shimmery, alien appearance. Use a lighter shade for his cape, and add details in black for his facial features and spiked tail, so it stands out from the background. Give his eyes some extra spark by outlining them in a bright, luminescent yellow, and fill them in with a glossy black. Finally, add some light, warm orange tones to the laser beams shooting out of his eyes to make them stand out.