Two Dazzling Emerald Arms

Stage 4 Partial Transformation - "Two Dazzling Emerald Arms" (4단계 부분 의태 - 녹주석의 색을 떤 찬란한 두 팔) is the name of the Berdych's stage four Canine Partial Transformation. This canine transformation form will transform Berdyc's arms to metal on the inside of her arms with light blue fur on the outside of her arms, starting from her shoulders and going down below to her fingers.

This is not a transformation Berdych is able to attain by her own power, but it was with the help of Khun Aguero Agnis's fiery sweetfish ability that allowed her to get to the next level of transformation.