Watch Danny Williams, 47, who famously beat Mike Tyson, fight a Russian who is joined by a BEAR on ring walk

DANNY WILLIAMS lost to Sergei Kharitonov after the Russian casually strolled to the ring with a BEAR.

The 47-year-old British boxer – who famously beat Mike Tyson in 2004 – quit after just two rounds.

The commentator was stunned to see the huge bear inside of the arena

The bear walked out ahead of the Russian fighter

Before the fight got underway, Williams witnessed one of the most bizarre ring walks in history.

MMA fighter and kickboxer Kharitonov wanted to make sure his debut was unforgettable.

The 40-year-old made his way to the ring alongside a ginormous grizzly bear.

Members of his team tried to keep the beast under control as it stood on its hind legs.

The stunned commentator said: “That’s a real life bear!

“That’s not a man in a costume! I’ve seen it all now.”

A heavy metal rock band was also playing inside of the arena in Khimki, near Moscow.

Williams, who has a record of 54-29, could not keep his nerve in the ring before he threw in the towel.

Sergei Kharitonov made it a night to remember in Russia

A live band was playing as the Russian entered the ring

The 47-year-old is known for knocking out Tyson at the Freedom Hall State Fairground in Louisville.

On the same card on Friday night, British star Umar Sadiq suffered a brutal defeat to Fyodor Chudinov.

The 32-year-old was rushed to hospital after needing oxygen and coughing up blood.

Danny Williams made history as he beat Mike Tyson in 2004