Michael Adebolajo accused of murdering Drummer Lee Rigby in Woolwich has been remanded for a bail hearing within 48 hours.
Michael Adebolajo, 28, whose left arm is bandaged, told the Westminster Magistrates’ Court he wanted to be known as Mujaheed Abu Hamza.
He also blew kisses to friends in the public gallery.
Adebolajo, of Romford, Essex, is also charged with the attempting murders of two police officers.
His co-accused Michael Adebowale, 22, from Greenwich, southeast London, is due to appear at the Old Bailey via video link shortly.
It comes as David Cameron is expected to make a Commons statement about Drummer Rigby’s killing when MPs return from their half-term break.
Drummer Rigby was hacked to death near Woolwich Barracks in southeast London as he walked back to base on May 22 after a day working at the Tower of London.
An inquest into Drummer Rigby’s death found he suffered “extensive and serious” injuries and had to be identified by a dental expert.
The short hearing at Southwark Coroner’s Court on Friday was told he was hit by a car before being attacked by two men armed with a cleaver and a knife.
People across the country subsequently paid their respects to Drummer Rigby, with floral tributes marking the scene of his death.
But this weekend also saw clashes between rival protesters outside the Houses of Parliament, despite pleas from police and the soldier’s family not to use the death for political gain.
On Saturday around 300 Unite Against Fascism (UAF) members gathered in Parliament Square to block the British National Party (BNP) from marching to the Cenotaph.
Fierce shouting from both sides spilled into violence and dozens of police were required to break up the disorder.
Scotland Yard said 58 people from the UAF protest were arrested under section 14 of the Public Order Act after they refused to move to their pre-arranged protest pen in Whitehall.
Protests by the Scottish Defence League (SDL) and anti-racism campaigners took place in Edinburgh’s Old Town.
The SDL held a static protest outside the Scottish Parliament, while UAF organised its own counter-protest.
Small groups of EDL supporters gathered across England, including in Sheffield, Brighton, Luton, Colchester and Walsall.
The Prime Minister will address MPs after chairing the first meeting of a new anti-terrorism task force he ordered to be set up as a result of the Woolwich attack.
The Cabinet level group, which will also bring in intelligence and police chiefs when needed, will focus on radical preachers who target potential recruits in jails, schools, colleges and mosques.
It will monitor trends in radicalisation and tackle “poisonous narratives”, No 10 said.
Other members include Deputy Prime Minister Nick Clegg, Home Secretary Theresa May, Chancellor George Osborne, other key Cabinet ministers, Metropolitan Police commissioner Sir Bernard Hogan-Howe and Andrew Parker, the director general of the Security Service.
Downing Street said it would be an “exploratory meeting”.
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