Mirko Petković Čelzi / Мирко Петковић Челзи(1978–2008) was a Serbian football supporter actively involved with Partizan's fan community. Known as Mirko Čelzi for his distinctive blue Chelsea scarf, he was recognized for his humor, adventurous personality, and dedication to attending matches and traveling to away games. His premature death in 2008 might be related to some personal habit, though the specific cause is not detailed. Source: https://cetvrtioktobar.blogspot.com/2014/01/mirko-petkovic-celzi-1978-2008.html