Didn't take full notice, but Charlie called Helsa a loser in her song "Inside Every Demon is a Rainbow" I possibly think that Helsa did something that made Charlie hate her because Charlie is too kind to be hated. And I possibly think it's because either Helsa didn't like Charlie being in a relationship with her brother, Seviathan or because of jealousy. Think about it, Helsa's dad is the ruler of the Envy Ring and Lucifer is the ruler of the Pride Ring and the King of Hell.
And like Alastor and Vox, they're rivals.
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Helluva Boss And Hazbin Hotel thoughts
FanfictionMy thoughts and feelings about Helluva Boss