Mr Richards, from the Grangetown area of the city, was a "much-loved father, grandfather, son, brother, uncle, cousin, and an all-round family man", according to his family.
Colin Richards, 48, died in the Ely area of Cardiff on Sunday 7 April last year, after he was found unconscious in Snowden Road.
Corey Gauci, 18, appeared at Cardiff Crown Court on Friday, where he entered not guilty pleas to charges of murder and violent disorder.
Police say Mr Richards's family are being supported by specially-trained family liaison officers.
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