The scene unfolds on a whimsical alien planet, where a group of Warhammer Space Marines are throwing an unexpectedly joyous birthday party for Charlie. The landscape is an eclectic mix of vibrant purple and neon green foliage under a sky painted with swirling, otherworldly auroras. In the foreground, the Space Marines, clad in their iconic power armor, have traded their usual grim demeanor for party hats perched humorously atop their helmets. They are gathered around an oversized birthday cake, crafted to look like a fortress, with turrets made of colorful candies and frosting battlements.

Standing beside them is the Great Unclean One, a gigantic, bloated demon with a surprisingly festive party blower hanging from one of its massive fingers. It seems to be having a great time, as it playfully attempts to blow out the trick candles on the cake with its fetid breath, much to the Marines' amusement.

To the side, a banner made from shimmering metallic fabric stretches between two alien trees, boldly proclaiming "Happy Birthday, Charlie!" in bold, interstellar script. In the sky above, a small fleet of hovering drones spells out "CHARLIE" using a series of floating holographic lights, creating a stunning spectacle against the celestial backdrop.

Adding to the surreal scene, Space Marine-themed party decorations are scattered around, such as servitor piñatas and plasma grenade party poppers, while nearby, a stack of gifts wrapped in combat-patterned paper awaits opening. In the background, an amusingly tiny DJ booth is set up on a hoverpad, where a servitor equipped with turntables is spinning records, providing an unexpected beat to this unique intergalactic birthday celebration.

Generated with these themes: Warhammer space marines having birthday party with great unclean one.

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