No, the Light Fury’s name is not Luna. In fact, the Light Fury is never referred to by name in the film franchise, and her name has not been officially confirmed by DreamWorks Animation.

The Light Fury is a dragon species that was introduced in the 2019 film “How to Train Your Dragon: The Hidden World.” She is a female dragon with pure white scales, iridescent blue eyes, and the ability to blend in with her surroundings using a special bioluminescent glow. She is also depicted as being faster and more agile than Toothless, the film’s main dragon character.
While the Light Fury’s name has not been officially confirmed, some fans have speculated that her name might be Luna based on a few clues from the film. In particular, some fans have pointed out that the Light Fury’s bioluminescent glow resembles the moon, and have suggested that Luna could be a fitting name for her.
However, it’s important to note that this is purely speculation, and there is no official confirmation that the Light Fury’s name is Luna. In fact, some fans have criticized the idea of giving the Light Fury a name at all, arguing that part of her appeal is the mystery and otherworldly quality that comes from not knowing her name.
Ultimately, whether or not the Light Fury’s name is Luna is a matter of personal interpretation and opinion. Some fans may prefer to give her a name to help them connect with the character more deeply, while others may prefer to leave her unnamed in order to preserve her mystique and appeal. Regardless, the Light Fury remains a beloved and iconic character in the “How to Train Your Dragon” franchise, and has captured the hearts of fans around the world.