A 17-year-old boy was charged with intentionally causing serious injury, assault in company and robbery for the attack on Manrajwinder Singh on Sunday in Birrarung Marr.
He faced a children's court and was remanded in custody to reappear on Tuesday, Victoria Police said in a statement.
Earlier, two teenagers - a 17-year-old Sydenham boy and a 16 year-old St Albans boy - were charged with assaulting Singh, who remains in an induced coma in a hospital here after being bashed up by eight thugs.
The offenders, perceived to be of African appearance, assaulted Singh by kicking him on the head and hitting him with a stick.
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A search is on for four others believed to be involved in the incident. The police have appealed to the public for any information to contact them.
He was granted bail on the conditions he would not associate with co-accused and abide by a nightly curfew at home with his parents, who were in court, The Age reported.
Yesterday, the 17-year-old Sydenham boy, said to be part of a gang which targeted people of Indian appearance, was denied bail on the grounds that he would be a danger to the public if released.
The court was told the 17-year-old is a member of a gang of youths known as 'KYR' - an acronym for 'Kill Your Rivals' - who terrorise vulnerable people and Indians.