This mecha paper model is Venus A, a female giant robot that was created by Kenzo Kabuto as a partner for the Great Mazinger and is piloted by Jun Hono, based on the Mazinger Z (Tranzor Z) manga and anime series, the papercraft is created by AnimeMania.
Venus A is much more powerful than Aphrodite A and Diana A, maybe even comparable to Minerva X. Venus A is colored white and red with a light purple front and its 'hair' is much straighter than its manga counterpart. The antenna are also pointed angular instead of straight. It features a human-like face with a skin tone similar to its pilot and large visible red lips. [Source: wikia]
You can download this robot paper model here: Mazinger Z - Venus A Free Robot Paper Model Download