Negative Levels are a concept appearing only in the Yu-Gi-Oh! 5D's anime, and are used exclusively on the new Dark Synchro Monsters. In real life any such Levels are instead positive.
Currently, the only card that can cause a monster to have a negative Level is "Dark Wave".
They are represented by 
, which aligns to the left of the card, whereas positive Level Stars align to the right.
Trivia
- A negitive level star is very similar to the Dark Star ([[1]]) in [Mario & Luigi: Bowser's Inside Story.
Example:
![[1]](https://www.mariowiki.com/images/e/e0/DarkStar.gif){kind=link}