Men in court on death charge.
Jamie Evans, 20,of Duw Crescent,Cardiff and Christopher Raisis, 24,of Amroth Road,Cardiff,are accused of unlawfully killing South Wales fire fighter Richard John Jenkins.
The 29-year-old was engulfed in a fireball seconds after arriving at a blaze at the Trelai Community Centre in Bishopstone,Cardiff in the early hours of May 23.
At Cardiff Magistrates Court Evans and Raisis, who spoke only to give their names and addresses, were charged with his manslaughter.
They face separate charges of witness intimidation and aggravated burglary in relation to the incident.
Both defendants also face unrelated charges of causing actual bodily harm. Evans faces a further charge of burglary.
The men were remanded in custody to appear in Cardiff Crown Court on June 8.
They were also ordered to appear before Cardiff magistrates on June 7 in relation to the joint charge of ABH and Evans' charge of burglary.