A man dressed as Wolverine was arrested in Sydney's CBD overnight after allegedly being kicked out of a pub, then punching two men and leaving one unconscious.

Police were met with the bizarre arrest at about 2am on Sunday after participants left Oz Comic-Con - a pop-culture event known for its revellers dressing up as their favourite characters - and went out afterwards.

Comicon revellers were caught up in a fight in Sydney's CBD on Sunday morning. Credit:Channel Nine

In addition to dealing with 'Wolverine', a Power Ranger was one witness assisting police with their inquiries at the King Street location.

The two victims were taken to hospital as a result of their injuries while the 28-year-old accused of causing their injuries was released this morning.

He faces court next week, telling reporters awaiting his release the incident was "just a misunderstanding".