UFC STAR Polyana Viana left a man with horrific facial injuries after he tried to rob her with a CARDBOARD gun.
And the cowering thief even begged her to call the cops in fear of another beating after targeting the wrong person.
The Brazilian was waiting for her Uber in Rio de Janeiro when the misguided criminal demanded she hand over her phone.
After claiming he had a gun, Viana punched and kicked the would-be-robber before locking him in a rear-naked choke.
Viana, 26, kept the man in a submission while she waited for police to arrive.
She told MMA Junkie: "When he saw I saw him, he sat next to me.
"He asked me the time, I said it, and I saw he wasn’t going to leave. So I already moved to put my cell phone in my waist. And then he said, 'Give me the phone. Don’t try to react, because I’m armed.'
"Then he put his hand over [a gun], but I realised it was too soft."
The 'gun' turned out to be a cardboard cut-out.
Viana added: "He was really close to me. So I thought, ‘If it’s a gun, he won’t have time to draw it.’ So I stood up I threw two punches and a kick.
"He fell, then I caught him in a rear-naked choke. Then I sat him down in the same place we were before and said, 'Now we’ll wait for the police.'"
Viana, who is 1-1 in the UFC but won nine of her ten MMA fights before that, insists she was calm throughout the attack.
She said: "I was fine because he didn’t even react after. Since he took the punches very quickly, I think he was scared.