A precious cosmic being from on high holds a redeemed Angel

Fluttershy cosplays Emily from Hazbin Hotel. Emily in fact appears to be heavily derivative of a combination of Fluttershy and Pinkie Pie's personalities, particularly likely because the creator of Hazbin Hotel is a well known lover of Friendship of Magic, and has specifically stated she imagined the voice of one of her other main characters (Niffty), the voice she had for Niffty in her mind was Pinkie Pie's.

Fluttershy really is an angel of Equestria, thus it is so fitting for her to be a Seraphim here ♡♡♡♡♡♡

If you are wondering why there seem to be so many wing feathers behind Fluttershy, that's because she's a Seraphim in this, just like Emily. Seraphim have 6 wings, thus Fluttershy in this has 6 wings.

(If you are wondering why one of her 6 wings is blue - ||that's actually a Hazbin spoiler. Emily loses one of her wings at the end of Season 2 of Hazbin Hotel. Emily has light blue wings - Emily gets a golden wing to replace her lost wing. Thus, Flutters gets a blue mechanical wing, the exact same color in fact as Emily's natural wings||.