From Halopedia, the Halo wiki
Mariposa is most likely a planetary gas giant. At some point in time, the UNSC Navy's Sixth Battle Group outmaneuvered and escaped what was presumably a Covenant fleet near the rings of Mariposa.
Mariposa means “butterfly” in the Spanish language.
List of appearances
- Halo Graphic Novel
- Second Sunrise Over New Mombasa (First mentioned)