In 'On rushed bold Hector gloomy as the night' what literary device is used to describe Hector's mood?

In the phrase "On rushed bold Hector gloomy as the night," the literary device used to describe Hector's mood is simile. The comparison of Hector's gloominess to "the night" emphasizes the depth and intensity of his mood, suggesting a sense of darkness and foreboding. This simile enhances the reader's understanding of Hector's emotional state, portraying him as both courageous and burdened.