Sana would make the perfect extra superboss in a Holo RPG.
>doesn't have a traditional sprite/model, is just fuckhuge in the background of the battle screen
>orchestral version of Astrogirl
>tons of HP
>multiple points to attack
>immediately starts the battle by summoning a star
>every few turns the battle text says "Hydrogen fuses into Helium, Helium fuses into Carbon, Carbon fuses into Oxygen" and so on until it gets to Iron
>every stage of fusion the star gets brighter and bigger
>a few turns after the star's core is Iron, Sana casts Supernova that wipes your party
>gotta break the dango planets in her hair or some shit to stop the fusion process
>her main body is completely resistant to attacks until they're all broken
>regularly uses high damage AOE attacks or multi-hit single target attacks to fuck you up
God I miss her, her streams were so comfy