For all-around gymnastics gold medal favorite Kohei Uchimura, "Pokemon Go" turned into Pokemon dough in Brazil.

The reigning Olympic and six-time world champion confided on Sunday he was hit with a ¥500,000 ($5,000) data roaming bill after becoming hooked on "Pokemon Go" since arriving in Brazil for the Rio Games.

Uchimura said he downloaded the app when he touched down in Sao Paulo for pre-Olympic training camp and, just like so many around the world, became instantly hooked — not knowing he didn't have a flat rate for overseas data usage.

When Uchimura checked his bill, he couldn't believe his eyes.

"¥500,000..." sighed the defending six-time world champion.

Added teammate Kenzo Shirai, "He looked dead at the team meal that day."

Uchimura, though, was ultimately spared of the huge bill after contacting his phone carrier company to explain the situation. In the end, he got away with the daily flat rate of ¥3,000.

"I really lucked out," Uchimura said.