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The protagonist mobile suit in Gundam Suisei no Majo. Piloted by Suletta Mercury. Upgraded into Gundam Aerial Rebuild.
The Gundam Aerial is the first starting lead Gundam from a Gundam TV anime that is equipped with bit or funnel weaponry. Previously, bits or funnels are usually reserved as signature weapons of some mid-season upgrades or final lead Gundams such as Nu Gundam from Char's Counterattack (or Hi-Nu Gundam from Char's Counterattack - Beltorchika's Children), Strike Freedom Gundam from Gundam SEED Destiny, 00 Qan[T] and its Full Saber variation from Gundam 00 A Wakening of the Trailblazer, and Gundam AGE-FX from Gundam AGE.
In Season 2, it is revealed that the Gundam Aerial/Rebuild is either the current body or contains the consciousness of Ericht Samaya.
Its real life mechanical designer is JNT.
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