see-through body
When objects behind (and sometimes simultaneously inside) a character can be seen through a character's skin and/or clothes, either partially or wholly. This might include a visible skeleton and/or organs.
See-through bodies might be due to character design - such as for ghost characters, slime girls/boys, etc - or because a character is fading away.
If a character has an entirely different image embedded in their skin/clothes, see double exposure.
Not to be confused with invisible man which is a technique used to allow clear view of sexual scenes.