Strength is to my knowledge, the sinister persona of Yuu, a girl who befriends main character Mato Kuroi in Black Rock Shooter. Just like Nessa, this figure is hovering above ground. The difference being a much more elegant approach to Strength as her body and gear attach to the base leaving nothing to displease the viewer. The pose also appear more realistic as Strength is either landing on her feet or taking off backwards.
There is something quite appealing about a tiny female equipped with enormous robotic hands. Good Smile’s Dead Master and Black Rock Shooter may be more popular in general but Strength is my choice of the bunch.