An Iraq war veteran says he has been targeted by Queensland police who wrongly accused him of being a criminal bikie.

Bjorn Luba, 28, was approached by police in Brisbane's Fortitude Valley early yesterday morning.

The Brisbane Magistrates Court has heard Luba was fed up being mistaken for a bikie in public and responded angrily by swearing at police and flexing his muscles.

He has pleaded guilty to charges of public nuisance and obstructing police.

His lawyer told the court Luba served six years in the Army and twice served in Iraq.

He explained that his client's many tattoos were obtained during his time in the armed forces and were not evidence of any association with outlaw motorcycle gangs.

Magistrate Jacqui Payne ordered Luba be released with no conviction recorded.