Hearth is a very loyal friend and has risked his own life multiple times to save both Magnus and Blitzen. He is shown to have a dry and self-deprecating sense of humour which he often exercises when annoyed or happy. He is guarded with his own emotions as he was constantly downtrodden and ridiculed by his father and the elves around him due to being deaf, as elves cannot tolerate imperfections. However, with Magnus and Blitzen his personality and self-confidence evolves as he is around people who truly appreciate his talents and empathise with his weaknesses. He is great at rune magic, and uses Alf sign language to communicate, it is similar to Alerican sign language.

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