A white (or yellow) eyed, dark skinned, white haired girl who was featured in the Black ★ Rock Shooter OVA. She wears a hooded garment and it appears a tail is peaking from it. Her arms are encased in over sized gauntlets acting as mechanical arms of sorts.
In the OVA her likeness is similar to a civilian named Koutari Yuu. It is speculation if Yuu and Strength are connected.
The following tags are aliased to this tag: strength_(brs) and /str (learn more).