This papercraft is Super Baby Vegeta 2, the form when Baby manage to control Vegeta's body, based on the Dragon Ball GT series, the paper model created by Nadask. His name is a testament to his being what Dr. Myuu refers to as his "baby".
Initially, Baby is single-minded in reviving the Tuffle race and exterminating the Saiyans. Over time, it is shown that he is cunning enough to dominate the Z Fighters, possessing Vegeta and successfully restoring the Tuffles' home planet. However, Baby is also incredibly childish and immature; he is very prone to taunting, and flies into a rage if he is teased enough. Ironically, despite seeing the Saiyans as a barbaric race, he displays enjoyment in battle as well; upon becoming a Golden Great Ape, Baby pretends that he is on a mindless rampage, and massacres countless followers as a means of testing out his abilities. He is very intelligent, and has an extremely egotistical and selfish personality.
After he receives energy from his followers, becoming Super Baby Vegeta, his cruelty becomes more pronounced, and he states that each and every living being should be considered his slave. Due to the Tuffle King's DNA within Baby, he is also tremendously proud, and he prefers to fight one-on-one. Being one of the two survivors of the Tuffle race, who were all but exterminated by the Saiyans, he bears a deep hatred of the Saiyans.
Unlike other villains of the series in its entirety, Baby is not instinctively acting on evil intentions alone. He is an antagonist to the protagonists of the storyline, but he is seeking vengeance for all the misery that was brought unto him and his own race by the Saiyans. He does want to pay back his pain and suffering, but the desire to do so is a direct cause of what happened to his own race. If anything, through obtaining revenge against the Saiyans, he would inadvertently be fulfilling a heroic feat. At least, if he had done this before the drastic reform in Saiyan mentality caused by the influence of Goku's upbringing and Frieza's betrayal.
You can download this papercraft model here: Dragon Ball GT - Super Baby Vegeta 2 Free Papercraft Download