Androgynous applies to any character that displays physical traits associated with both sexes, particularly with respect to facial features and build. Genitalia are a different matter—for that, see futanari or cuntboy.
This tag may also apply to characters whose gender is canonically unknown (e.g. Akiyama Mizuki from Project Sekai) and to original characters whose gender cannot be visibly distinguished.
If a character's sex is simply obscured, whether by angle, clothing, distance, lighting, or something else, use ambiguous gender instead.
