Sayrune

The Sayrune (セイルーン, Seirūn?) is Adiane's personal Gunman and was first seen deployed from the flagship, Dai-Gunkai, while pursuing the stolen Dai-Gunzan. It is one of the few Gunman seen in the series to feature two unique configurations: its default winged humanoid appearance, as well as an alternate scorpion-shaped layout. While in its winged state, the Sayrune seems to rely mostly on a range of energy whips and tendrils to mount any sort of attack, whereas its scorpion form is endowed with massive pincer claws and a stinger. The Sayrune can also use its wings to form a double-edged weapon called the Bloody Clasper.

The Sayrune was used to cripple the Dai-Gurren when it crossed the sea on its way to Teppelin. After softening up the massive Gunman, Adiane grappled with Gurren Lagann as Viral used her flagship to drag Dai-Gurren underwater. However, Gurren Lagann drilled through the Sayrune's pincers and managed to save Dai-Gurren by using its drills as propellers. In this state, it was faster than Sayrune, which also lost its wings when it attempted to use the Bloody Clasper on the escaping enemy mecha.

With Dai-Gurren back on the surface and most of her combat options gone, Adiane resorted to underhanded tactics; jumping aboard Dai-Gurren and grabbing Nia in Sayrune's claws. Unfortunately, Yoko removed that bargaining chip by shooting through Sayrune's shoulder, forcing Adiane's mecha to drop her hostage. With no further defenses, Sayrune was destroyed, along with its pilot, when it was shot by the Dai-Gurren's cannons at point blank range.

Eytmology
The Sayrune's name is based on Seiryuu, the Azure Dragon of the East, one of the Four Symbols of the Chinese constellations in Japanese neme.