Ungalo is one of DIO's illegitimate children with an unnamed woman. When he fatefully meets with Enrico Pucci, he awakens his Stand, Bohemian Rhapsody, and causes mayhem by bringing out fictional characters into reality in order to kill the Joestar Group.
Ungalo is a young man with average build and height, possessing a rather flat face, small eyes, and big visible teeth, and a "U"-shaped mark under the left eye. Ungalo wears a shirt with multiple randomly placed dots connected with each other by lines, and a knit cap. Two braids can be seen underneath his cap.
Inheriting his father's worst traits, Ungalo is a sadistic, violent, and incredibly vulgar individual with a short temper. He holds a grudge against the world for his circumstances, wishing to plunge it into despair and chaos.
Ungalo's violent nature shows in his first appearance when holding Father Pucci hostage to escape law enforcement. He points scissors at the priest's throat, threatening to stab it if the police officers take their guns out.
After Pucci awakens his Stand Bohemian Rhapsody, Ungalo becomes filled with a drive and happiness manifesting from his new-found ability. Capable of taking revenge on the world, he throws away his need for drug abuse and finds purpose in defending the priest. However, when Bohemian Rhapsody is defeated, Ungalo slips back to his hopeless nature and loses his will to live.
- Main article: Bohemian Rhapsody
Bohemian Rhapsody allows Ungalo to bring out fictional characters into the real world and also force people to relive the story of the character they identify themselves with the most.
Ungalo is first introduced in Orlando after using an unknown drug and going into a state of shock. Ungalo is subsequently brought to the hospital and wakes up, only to hold Enrico Pucci hostage with a pair of scissors. Pucci, however, calmly explains that there is a certain "gravitational force" that attracts certain people together. In response to this, Ungalo impales Pucci through the throat, but Pucci somehow stays alive, going on to explain that Ungalo missed a vital nerve by a millimeter. Pucci then suggests that Ungalo use his energy for wiser things than drugs. At this moment the police officers shoot at him and he is miraculously dragged away by the stick figure from a nearby "Do Not Walk" sign.
Four days before the new moon, Ungalo then meets with his other half-brothers Donatello Versus and Rikiel and Pucci. Pucci seemingly explains his goal in life to Ungalo and Ungalo departs to attack the Joestar Group.
Ungalo activated Bohemian Rhapsody to bring fictional characters to life, where they run amok in the world. He travels in a plane, drinking wine and enjoying hearing of the chaos his newfound power caused, claiming it as revenge against the whole world for the miserable life he had. However, he is distracted by a cheerful girl reading from a Peter Pan book, and realizes that his Stand was already defeated when he sees the titular character on the cover. Ungalo subsequently loses his will to live upon realizing that he will be reverting back to his hopeless life.