The actor who plays Tony Soprano's new bodyguard ended up in jail over the weekend, charged with flexing his giant muscles a little too aggressively off-screen.

Louis Gross — who appears as Perry Annunziata, aka Muscles Marinara, on the mob drama — was busted Sunday for allegedly bashing in the front door of a home in St. Albans in Queens, N.Y., and walking off with $2,700 in property.

As he left Queens Criminal Court last night, Gross, 23, called the home's owner, Trinny Hill, 38, "my landlord — my ex-landlord," though cops countered that Hill is really his ex-girlfriend.

Hill originally told cops that the items removed from the two-family home were her own — then recanted, law enforcement sources said.

"I don't know nothing. I'm innocent. I'm always innocent," he said last night. "They were personal items — they belonged to me," he added. "I had the right to take them."

If convicted of misdemeanor criminal mischief, Gross faces up to a year in jail and a $1,000 fine.

The arrest was not the first for the actor.

He was busted on Feb. 3 for allegedly stealing a shirt from Michael K, a trendy SoHo men's shop, and then beating the store manager and a security guard when they confronted him, law enforcement sources said.