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|Gwenn ha Du|
|Romaji||Guen ha Dyuu|
|Origin||Les Histoires Duchemin 3|
The Twins are among the closest to Aimée's heart and sentiments, and thus regularly come to her aid in scenes. This is referenced on the cover of Gwenn ha du: Les Histoires Duchemin 3 Original Soundtrack.
The words gwenn and du by themselves mean white and black. If the words are hyphenated, then Gwenn-ha-Du would be taken as the name for the Flag of Brittany. The Twins' outfits do reflect this: Gwenn's shirt is white while Du's shirt is black, and both have ermines on the right side of their shirts.