You can alter the shape of Galacta Knight's mask visor in order to express various emotions even without changing the shape of his eyes. Here's a very simple example.
That's not how his mask truly works, it's just a stylization technique to increase expressiveness. The mask is fully rigid in-game. If it changes like that, it's because the artist modified it; Galacta isn't aware of it.
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Did I do it right