Fredi Rivero was attacked in Seven Sisters Road on February 27 and died in hospital the next day.
The victim, a Bolivian national, was near a bus stop when the teenagers got off a bus and surrounded him.
The youths, who at the time were 14, 16 and 17, and are now 15, 17 and 17, pushed, shoved, kicked and punched him, with one of them filming the incident on her phone.
A 15-year-old and two 17-year-olds from north east London were sentenced to a combined nine years at the Old Bailey on October 3.
The 15-year-old girl was sentenced to 2 years and 6 months, one of the 17-year-olds was sentenced to three years and six months and the other 17-year-old was sentenced to four years.
Fredi’s daughter said: “My dad was a kind, gentle, and polite man who was deeply loved by his family, friends, and the local community. He was my most loyal friend, and now he is my brightest star.
“He loved chess, calligraphy, the band Queen, and stargazing- an activity we both cherished doing together.
“He held strong values of integrity, dignity, and love, instilled in him by his family. He was a peaceful man who never went out of his way to trouble anyone.
“Our family has been left deeply affected and traumatised, we are now experiencing the profound grief and immense pain of losing him.”
Officers carried out a search of the area following the attack, tracking the girls down to a nearby park where two of them were arrested.
The third girl was arrested at her home.
Once in custody the girls began to blame each other for the attack, with one of the girls stating “I swear to god she pushed him and then he fell and hit his head.
“That’s nothing to do with me”.
Police used CCTV and analysis of the girl’s phones to prove this wasn’t the case.
It was found that one of the girls had filmed the attack on Fredi.
They were charged with manslaughter on March 1 and pleaded guilty on June 12.
