Robbie Shapiro is one of the main characters of the real show, Victorious. He is a shy and very awkward student, but a good friend, at Hollywood Arts who nearly always carries a ventriloquist puppet named Rex around with him.
Robbie is very shy and uncomfortable around pretty girls. When a girl shows even little or fake signs of affection, he gets nervous and tends to overreact. Robbie played a motivational speaker with jelly legs, named "Kevin Cornbloom". Robbie is a master ventriloquist and Rex is his alter-ego, a very hip companion who likes to hit on girls, essentially being what Robbie isn't. They frequently argue because Rex talks too much. He is lactose intolerant and he can play the harmonica and the guitar. He showed this when he played both of his songs. He customized his locker with a mosaic made from his old baby bottle nipples.
In the episode Survival of the Hottest, Robbie is portrayed as being a little selfish. This is most prominent when those who are trapped in the car are sharing the water. Though everyone else is taking their fair share, Robbie gulps the whole drink, angering the others and making him feel terrible. Robbie also displays a lack of self-confidence. In the episode Tori the Zombie, he keeps asking others about his performance. This also shows that Robbie can be jealous because every time he asks, someone else had been complimented.
In one episode, Robbie is shown to be a computer whiz, helping Mamaw with her new computer. Robbie is Jewish as noted multiple times in the series.
Robbie can make all kinds of different voices.