Design a loading icon featuring a medieval knight, with a shield emblazoned with a loading symbol, standing in front of a medieval castle, with a dragon flying overhead.

Illustrate a loading icon in a retro-futuristic setting, with a spaceship landing on a distant planet, surrounded by a swirling vortex of stars and planets.

Generate an image of a loading icon in a futuristic cityscape, with neon lights reflecting off the wet pavement and a sleek skyscraper in the background.