A baby-faced teenager has fronted the Melbourne Magistrates Court accused of fatally stabbing a 17-year-old boy and robbing his brother of a $50 cap.

Joshua Horton, 18, appeared for a brief hearing on Wednesday morning, charged with murder, armed robbery and intentionally causing serious injury.

A sketch of Joshua Horton, who faced court on Wednesday. Credit:Nine News

The Sydenham teenager allegedly stabbed Maaka Hakiwai, 17, who died in hospital, and injured his 18-year-old brother Nate in the same attack in Kings Park, in Melbourne’s west on the afternoon of September 28.

Mr Horton allegedly robbed Nate of a Los Angeles Kings cap, valued at $50, according to court documents.