Serbian alternative rock band formed at the end of 1990. The initial name of the band was Ad hoc until another group with the same name was discovered. Following the split with Nikola Vranjković in 2013, Block Out disbanded in 2014. The remaining four band members continued under a new name Čovek Vuk.

Members:
Milutin Jovančić Mita - vocals (1990-2014)
Nikola Vranjković - guitar (1991-2013)
Miljko Radonjić - drums (1992-2014)
Aleksandar Balać - bass (1996-2014)
Dejan Hasečić - keyboards, guitar (2003-2014)
Dragoljub Marković Blek - keyboards (1996-2003)
Dragan Majstorović Trle - bass (1990-1996)
Danilo Pavićević - guitar (1990-1995)
Dean Dimitrijević Deki - drums (1990-1992)
Vladan Lazarević Laki - guitar (1990-1991)