Lokomotiv Sofia is one of the four capital teams and participant in ECT. The main enemy of Loko is Slavia, but matches against Levski and CSKA also turn into derby games. Ultras Loko have friendship with Ultras Favac.
The most powerful and organized group of Lokomotiv is IBUU (Iron Brigades Ultras Union), founded in 1999.
- Сезон 2010/11: Ultra-Tribune
During past season the fans were deprived of attending games in their home - stadium "Lokomotiv" in Nadejda (because of absence of license). That caused wide dissatisfaction and protests against irresponsible management of the club.