Parallels.
That same look. Disbelief, disgust, betrayal. Both human residents of the boiling isles ultimately couldn't forgive Belos, and with good reason. His efforts to 'save' humanity only resulted in his fellow humans hating him.
His responses to both of them are the same. Deflecting blame, twisting it to be on the witches, still ever evading the consequences of his own actions. He acts like both a victim and a hero, contradicting himself and desperately grasping at any excuse to believe that he's the good guy in this story. "I tried to save your soul, it's your fault this all happened" and "We're human, we're better than this". Masterful manipulation that's now easy for these two to spot. His facade is broken. 👏
Belos is a phenomenal villain and seeing the people he's hurt not say anything to him but instead give him this look is so powerful.
They didn't need to say anything. The glare was enough to make him squirm, panic and frantically scramble to defend himself. He doesn't have power over them anymore, nor can he hide from his actions. He's faced with a look that acknowledges his wrongdoings, forcing him to come face to face with them despite doing all he could to avoid them. Despite destroying the fonder memories of his brother, burning out his face to justify killing him. ('Hollowing' out his mind, if you will.) Despite every instance of him running from his past. All that comes back with this look.
He can't control his fellow humans anymore, he can't convince them and he certainly cant be seen positively or loved by them. In one look, he's lost.
