Born to Srboljub and Milanka Golubović, Serb gastarbeiters living in Munich, Kristijan did not meet his father until primary school since he was away serving a long-term prison sentence for taking part in various criminal activities.

Already no stranger to juvenile delinquent activity, the youngster continued along the same path with street fighting, often involving knives and guns.

[4] Mija Pijuk's bodyguard Safet "Džimi" Buljuku began firing shots at Golubović, hitting him in the legs.

[5] In the early morning hours of Sunday, February 25, 1990, Golubović was one of the perpetrators of an infamous act of violence in Belgrade's Hotel Mažestik.

Along with his best friend at the time Dragan "Gagi" Nikolić, a heavily armed Golubović burst into the hotel's disco bar looking for a rival gangster.

Since they didn't find him, 24-year-old Nikolić and 20-year-old Golubović shot up and ransacked the place, destroying it in the process before fleeing the scene.

[6] Since the hotel's disco bar was a favorite mobster hangout, the incident gained them notoriety with the authorities, considering that many prominent and powerful mob figures were present to witness the shooting of bottles and furniture.

[7][8] To escape prosecution in Serbia, Golubović went back to Germany, but soon found himself serving a three-year sentence in Düsseldorf on an armed robbery charge from a few years earlier.

In 1993, German authorities extradited Golubović back to Serbia where he was wanted for a variety of criminal acts from the 1988–1990 period.

The story Golobović claims is true, that Ulemek sent him to Erdut to the headquarters of the Serbian Volunteer Guard (Arkanovi Tigrovi), where he was asked to fight for them, but declined.

[12] He was arrested in Operation Sablja, a crackdown on organized crime in Serbia following Prime Minister Zoran Đinđić's assassination, for being the leader of a criminal group that extorted €15,000 from a businessman from Sremska Mitrovica; the sentence was initially 6 years, but the case ended with 1 and a half-years.

[7] On the night of March 17, 2004, Golubović and famous Serbian turbo-folk singer Ceca Ražnatović (widow of the murdered Arkan) gathered protesters in front of the government building in Belgrade to rally against the situation in Kosovo where more than 36 Serbian Orthodox Churches had been burned the same day in an outbreak of Muslim Albanian violence against the Serb natives of the province.

On December 12, 2005, Golubović got sentenced to six years of prison by the Special Court in Belgrade on illegal arms and racketeering charges of €3,000 and gold jewelry theft from the Arsić's, a married couple from Aranđelovac.

After the fight, Kristijan made statements on social media that it was rigged and unfair, claiming it was the referee's fault.