Bennett found himself in hot water as signs warn visitors away. He told Spy he apologised as he did not speak Romanian and did not understand the signs.
Manu Bennett has "stripped off" and entered an ancient temple illegally. Photo / Supplied.
And he said it was worth the attention as it felt like an important thing to do in context with the site's ancient war history.
Manu Bennett played Crixus in the TV series Spartacus. Photo / Starz
"It was very traditional for Māori warriors to go into battle naked," Bennett said.
"Basically naked is more sacred and personal items are considered noa, not sacred. All things have energy and to fight naked means to fight pure, as with haka."
Bennett was in Romania for the Comic Con in Bucharest.
"When I am at a waterfall in Iceland or in the mountains of Greece I do my haka naked, it's more pure and earthly things like modern watches, jewellery and clothing have no place in the energy. I performed the haka with complete spiritual respect to the Dracian ancestors and am honored by the moment."
Bennett insisted the organisers at the Comic Con appreciated the gesture and understood it from his cultural perspective.
The Comic Con also featured Game of Thrones' actors Carice van Houten (Melisandre) and Vladimir Furdik (The Night King) as well as stars of Vampire and Hobbit franchises.
The trip is part of a politically-motivated European sojourn for Bennett.
Footage of Bennett doing the haka was shared on social media. Photo / Instagram.
Last month he was in Greece for the Memorial Day for the 671 New Zealand soldiers who died in The Battle for Crete. He told Spy he is a Māori gladiator fighting for the people.
Among commemorations for the Allied forces there was time spent on a special memorial for the Māori Battalion.
Officials asked Bennett to perform a haka on 42nd St, the place where the Māori Battalion led their legendary bayonet charge against a much larger German force in 1941.
Afterwards Bennett taught a group of Greek children the words and they performed it on the same spot it as was performed by the Māori Battalion.
"Last year I took to the stage at a rally in front of Greece's Parliament Building in Athens to honour the fallen members of the Māori Battalion — and to also argue why members of New Zealand's armed forces and members of the Māori Battalion, in particular, died in Greece defending the country from German invasion only to have Germany now buying Greece's freeways, port and airports.
Manu Bennett visited Sarmizegetusa Regia - a Unesco World Heritage Site in the ancient capital of Dacia. Photo / Supplied.
"Our ancestors would be turning in their graves on Crete to see what's happening to Greece now under the heel of Germany."
Bennett claims that many Greeks demand Germany repay their own debt to Greece War Reparations for the one-in-10 Greeks who died during the war.
He also took part in a rally at Mt Athos and traveled to Athens to discuss a role in a Greek film about the 1946-49 civil war and the massacre at Chios in 1882.
