Plushtrap is the only antagonist who appears in his own minigame, Fun with Plushtrap, and does not make appearances elsewhere.
Plushtrap is a smaller, plush version of Springtrap. He is similar in design to his animatronic counterpart, albeit much more cartoonish and less damaged. He also seems to be less menacing in appearance than the six other Nightmare animatronics.
Plushtrap has brownish spots on his belly, and on his ears. He also has four fingers and three toes, which is noticeably different from all of the other Nightmare animatronics, seeing as they all have five fingers and five toes, making his design more similar to the original animatronics from Five Nights at Freddy's.
Plushtrap's head appears to be much larger than his body in comparison to the other animatronics, supporting the fact he is a plush. He also has many razor sharp teeth, and beady eyes. He appears to be in decent condition compared to the other Nightmare animatronics, except for a few darker brown spots on his belly, and a few small rips on each part of his body. [Source: wikia]
You can download this papercraft template here: Five Nights at Freddy's 4 - Plushtrap Free Papercraft Download