The lovable, spherical-shaped character Grimace has always been one of McDonald's most recognizable faces — even if fans never knew what he actually is Ronald McDonald is a clown. Mayor McCheese is a cheeseburger. Birdie the Early Bird is a bird. The Hamburglar is a thief. Mac Tonight is a Moon. And the Fry Kids are, well, fries. But what the heck is Grimace supposed to be? The lovable, spherical-shaped, purple giant has always been one of McDonald's most recognizable characters, with his bright smile and his arms always open for a hug. But fans have never quite known exactly what he's supposed to be. That is, until now. Back in 2021, Brian Bates — a manager of a McDonald's in Canada — revealed the answer to the Golden Arches' biggest mystery, telling CBC News that Grimace "is an enormous taste bud, but a taste bud nonetheless."
Chroma key compositing, or chroma keying, is a special effects / post-production technique for compositing (layering) two images or video streams together based on color hues (chroma range). The technique has been used heavily in many fields to remove a background from the subject of a photo or video – particularly the newscasting, motion picture and videogame industries. A color range in the foreground footage is made transparent, allowing separately filmed background footage or a static image to be inserted into the scene. The chroma keying technique is commonly used in video production and post-production. This technique is also referred to as color keying, colour-separation overlay (CSO; primarily by the BBC), or by various terms for specific color-related variants such as green screen, and blue screen – chroma keying can be done with backgrounds of any color that are uniform and distinct, but green and blue backgrounds are more commonly used because they differ most distinctly in hue from most human skin colors. No part of the subject being filmed or photographed may duplicate the color used as the backing.