Really reminds me of a seraphim, one of the highest angels in the Bible.

Accoridng to the Japanese direct as well, Spirits isn't going to be a cutscene-fest like Subspace (Which honestly, makes me really salty) but I hope that there's some sort of big final line of cutscenes dealing with him.I'm even cool with it being like a Kirby game where the big parts of the story happen at the end.

Oh yeah, between covering itself with a bunch of wings and destroying all who encounter it with divine fire, Galeem is totally a Seraph

As for lack of cutscenes, you're not wrong to be salty. But remember: Sakurai doesn't want the reward accessible on YouTube. As such the reward is probably the battles themselves; you can only get so much of that on YouTube