Arma-019

A female Arma originally paired with Soldato-J 019, she was killed by him as a Zonder. However, she managed to restore his memories with the last of her strength, but was unable to purify him. After she died J-019 took along a 'doll' version of her that couldn't use any sort of powers. After the battle with J-002 the doll stayed with her dying J as their J-Ark drifted off.

(Source: Wikipedia)