Jason Scott Mitchell, 19, was the last of the four men accused of killing Taylor to appear in the Fort Myers courtroom, CNN reported. The other three suspects, Charles Kendrick Lee Wardlow, Eric Rivera Jr., Jason Scott Mitchell and Venjah K. Hunte, testified Saturday either in person or by video phone.
All four have been ordered held without bond.
Sawyer Smith, Mitchell's attorney, described him as looking "shocked."
Police say the men probably intended only to rob Taylor's Miami home, not kill him, when they entered his house Nov. 26, but Taylor was unexpectedly home with his girlfriend, Jackie Garcia, because of an injury.
When the couple were awakened by the noise, Taylor got up and locked the door, police said. The men then allegedly burst into the bedroom and fired two shots, one of which hit Taylor's leg and he died the next day.
Mitchell confessed to taking part in the robbery, according to an affidavit, but did not identify the shooter, CNN said.
At the Redskins' home game against the Buffalo Bills Sunday, players and fans paid tribute to Taylor. A funeral is planned Monday at Florida International University in Miami.