Apparently I just found the Dyson Sphere from the first Utopia trailer. : r/ Stellaris
Ringworld dysonsphere (unmodded) : r/Stellaris
Megastructures - Stellaris Wiki
451110 stellaris, blue, Dyson sphere, video game art, science fiction, space - Rare Gallery HD Wallpapers
Stellaris on Twitter: "Tell us about your favorite megastructures. Which are your favorite? Which do you build first? Ever waged war over a megastructure or restored one? https://t.co/jCcWV0TYwo" / Twitter
Megastructures - Stellaris Wiki
Almost perfect, just need a dyson sphere : Stellaris HD wallpaper | Pxfuel
Top 10 Best Megastructure Mods for Stellaris – FandomSpot
Stellaris - Dyson Sphere on Red Giant | Paradox Interactive Forums