Srecko was raised in an orphanage along with five other uberhuman 'orphans', although the exact status of his parents has never been explained to him. There are reports that his mother died in childbirth as he duplicated himself. Srecko suffered some brain damage during the delivery and has always had difficulty learning, or even following directions.

He became known as Petica, one of Slobodan Milosevic's Serbian Six: a role he relished because it allowed him to leave the orphanage. During the fighting across Serbia, Bosnia and the other Balkan States, Srecko participated in horrendous acts but never realised the implications because he was never taught right from wrong.

When he came to torch a house in Kosovo, Srecko found himself strangely drawn to the family's pet dog. He destroyed the house, killed the two inhabitants but took the dog away. For days he looked after the dog, never leaving it alone for a minute. One night he tried to keep the dog quiet. It had been barking non-stop because Srecko had failed to feed it for two days. When the dog wouldn't stop, Srecko killed it by smothering it to his chest.

Rather than an isolated incident, the case with the dog has been reproduced several times with other stray animals and even young children. The other members of the Serbian Six discourage him from taking children, but don't seem to care about his behaviour when it comes to animals. In fact, Sestorica finds it amusing that the 'big oaf' doesn't realise what he is doing. She encourages him to show his pets affection, knowing that his clumsy strength will ultimately kill them.

Srecko doesn't really understand what he is doing. He lives with his family and trusts them completely. He has been taught to love Serbia and to do her bidding, but now that the Serbian Six have become independent from the State he listens to Stephan even more intently, not wanting to insult his brother by doing the wrong thing.

"Nice puppy dog... come to Srecko... he protect you now. Be good master."

Petica is a duplicator, able to generate up to five identical bodies from his own. These duplicates seemingly rip their way out of Petica's body with sprays of blood and tearing of ligament and bone. It does no damage to Srecko because he has an uberhuman regenerative ability. Petica serves as the Serbian Six's disposable army. He can walk into any situation and be blasted to bits, but Srecko won't mind.

He can manipulate his bones just as easily as his body, and usually protrudes his bones out of his body to use as weapons. This usually disgusts his opponents but Srecko doesn't see what is wrong with it. He can also flip his bones to the outside of his body to form a kind of carapace - a bony exoskeleton which provides him with great protection.

The first impression people usually have when they see Srecko is that he looks like a body only half-finished. His body is taut and bones seem to be threatening to break the surface, while in other places his body seems too long or too short. He usually wears a dopey grin on his face. His eyes are shadowed by a heavy brow ridge and his head is bald and misshapen.

While he generally wears whatever is comfortable, when acting with the Serbian Six he usually wears a simple brown cloth around his waist and brass coils around his ankles and wrists.