I think what I like most about this piece of art is that this is clearly Catra a number of years after the finale. Her hair has grown long again, but it is not the wild manner she had during the show. This is a Catra who has had time to heal, to grow.
And she's gone back to the Fright Zone. Back to the throne room. She's seated herself at what was the pinnacle of her whole world growing up, to see what it would be like to belong there. No Hordak to overcome, no Shadow Weaver to rebel against. Clear, open power. Alone.
That is not the expression of someone who is happy, or even revelling in their own might. Catra is realising yet again how singularly isolating being the leader of a war machine is. No friends; such attachments could upset her plans or unfairly protect soldiers that are necessary sacrifices. No allies; conquering Etheria would prevent any need for such reliance. No loved ones; the weakness is too great to risk. A single, untouchable, unlovable figure, ruling over an entire planet.
All alone.
