Police Commissioner Bill Bratton unloaded on the head of the NYPD sergeants union for a second day in a row on Tuesday, saying Ed Mullins deserved an even worse nickname than “Crazy Eddie.”

“Yesterday, I referenced that he’d been called ‘Crazy Eddie.’ Not my term, but that’s how he’s referred to because of some of his actions,” Bratton said following a school safety event in Brooklyn.

“A better term might be, from my experience with him, Missing In Action Mullins — MIA — because he has never been there for his members in terms of the way other union leaders have been for their members.”

Bratton said Mullins was “the only union leader who has never come up to see me on behalf of a member of his organization that was being disciplined.”

“In 28 months of promotion ceremonies, I don’t recall ever seeing him at a promotion ceremony, including the dozen or so in which his members were being promoted,” Bratton added.

“I don’t recall seeing him at any of the large-scale community events that we have held at police headquarters for our various communities … when most of the leadership of most of the other unions are always there.”

Earlier Tuesday, Bratton also told WINS 1010 radio that “Ed talks out of both sides of his mouth, unfortunately.”

“He talks a lot, but his membership should be asking, ‘What are you doing for us?’” Bratton said.

Bratton’s two-day fusillade came after Mullins sparked a war of words on Sunday by blasting Bratton for “hypocrisy” in dishing out discipline and demanding that the commissioner resign from the NYPD.

In response to Bratton’s latest verbal volley, the Sergeants Benevolent Association released a photo showing Mullins and the commissioner at an October 2015 NYPD promotion ceremony.

The union added a meme-style caption saying: “AFTER TELLING IT LIKE IT IS. Then that awkward moment.”

Mullins also sarcastically said he was “flattered the commissioner is paying attention to my work schedule.”