sqq, isaac clarke, yuzuki yukari, dead space (series), vocaloid, voiceroid, bad id, bad pixiv id, 1girl, ahoge, armor, black bodysuit, bodysuit, brown background, closed mouth, cosplay, expressionless, hair ornament, helmet, holding, holding unworn helmet, isaac clarke (cosplay), long hair, looking at viewer, pauldrons, purple eyes, purple hair, short hair with long locks, shoulder armor, sidelocks, simple background, solo, spacesuit, unworn headwear, unworn helmet, upper body