A self-professed karate expert who beat up a toddler so badly he broke the boy's leg has been jailed for 14 years.
Daniel Yamamotoyoshi, of Houghton Regis in Bedfordshire, told the child: "It's time to die... you are going to die now," Luton Crown Court was told.
Yamamotoyoshi - who had legally changed his name - punched and kicked the two-year-old and threw him against a wall.
Sentencing him, Judge Barbara Mensah said she would like to prevent him having contact with children again.
His victim will need long-term psychiatric help, the court was told.
Yamamotoyoshi, 29, who claims to be a black belt in karate, had admitted causing grievous bodily harm with intent at a previous hearing.
He also admitted causing actual bodily harm in relation to two other occasions when he had bitten the child.
Prosecutor Mary Loram said the photographs of the boy's injuries were "graphic".
When arrested, Yamamotoyoshi gave the police a "ludicrous" account in which he said the boy's injuries had been caused by muggers, the court heard.
Alistair King, mitigating, said: "His lifestyle was eccentric. He regrets what he has done and is willing to engage with psychiatrists while in custody."
Judge Mensah said: "This was cruel behaviour on a defenceless child.
"If I could make an order that you should never have contact again with any child, I would make that order."