- Alternative Character Interpretation: The snake spirits raise a lot of questions. When someone is corrupted by them, do the snakes actually, physically possess their bodies, or do the snakes simply manipulate them psychologically? For Necross, it seems like the former, but for Leeyoon and Sohone, it seems more like the latter. Maybe it's case-by-case. This makes it difficult to tell how evil Necross and Leeyoon really are. Is Necross' plan to destroy the sun his own idea, or was it formulated by the snakes? And while we're at it, you could also question if the snakes themselves are evil, or just following some sort of Blue and Orange Morality that involves corrupting people.
- Awesome Animation: The character and world designs are gorgeous, and the film makes excellent use of both CGI and hand-drawn animation, a rarity for modern animated films.
- Cliché Storm: One of the main drawbacks of the film pointed out by viewers is that the characters' roles and personalities are rather generic (Mune being the protagonist who messes everything up and is unsure of himself, Sohone being the arrogant guy who learns to care for others, etc.) However, most viewers agree that the outstanding art and character designs are what makes the movie unique.
- Hilarious in Hindsight: Both this movie and Moana, released two years later, feature a giant, villainous rock/lava monster who is actually a benevolent nature spirit who was corrupted by some outside force.
YMMV / Mune: Guardian of the Moon