At 6 feet 6 and 300 pounds, Siegfried Moore would be an undesirable opponent in a fight.

But the Logan man picked the wrong person to tangle with on Aug. 4, when he allegedly pounced on Devaughn Smith, one of two people he overpowered and killed earlier this month, police say.

As Moore stabbed him repeatedly, police say, Smith was able to turn the blade on his attacker and plunge it deep into his stomach.

Smith, 19, died of his injuries. Moore fled - and might have gotten away with murder, police say.

But his victim's blow punctured Moore's lung, and he needed a doctor's attention.

Detectives already had suspected Moore, 51, who knew both victims and had a violent criminal record. His hospital visits sealed their suspicions, and DNA tests confirmed his involvement in both killings, homicide Capt. James Clark said yesterday.

"This is a 6-foot-6, 300-pound predator that we're very happy to get off the streets," Clark said.

Both attacks were robberies, he said.

In the first case, Moore ambushed Smith in the vestibule of an apartment building on Camac Street near Louden about 3:30 a.m. Aug. 4, police said. Smith, who lived two blocks away, had been visiting a cousin there, Clark said.

Moore stole an undetermined amount of cash from Smith and stabbed him in the back, neck and torso, police say.

A week later, Moore allegedly attacked Huan Mo, 53, in the office of the coin-operated laundry her family owned at 15th Street and Wyoming Avenue. He stabbed her repeatedly when she resisted and stole an undetermined amount of money, Clark said.

Her husband and teenage son, worried when she didn't return to their South Philadelphia home, went searching for her and found the gory scene.

After Moore sought treatment at Albert Einstein Medical Center on Aug. 16 for the stab wound, police got a warrant to search his home on 15th Street near Belfield Avenue, Clark said.

There, they found gore-stained clothing, a bloody knife and screwdriver, cash and other evidence from the laundry, Clark said.

DNA tests on those items linked him to both murder scenes, Clark said.

Moore, a customer at the laundry who lived just a short walk away, remained in stable condition yesterday at Albert Einstein Medical Center. He is charged with murder and related charges in both killings.

Court records show that Moore, a high-school dropout, was arrested in August 2004 for punching a police officer in the head.

He pleaded guilty and was sentenced to nine to 23 months in prison and four years' probation.

He also has an October 2005 arrest for drug possession; he was found guilty and sentenced to 12 months' probation, records show.

JAMES STOKES often wore Tarzan, Superman and "Star Trek" costumes - and not on Halloween, according to neighbors on his Southwest Philadelphia block.

Stokes, 37, also liked wigs - from Jheri curls to Afros - and once was seen at a local water-ice stand with a lollipop and a sign around his neck that read: "Single man looking for a woman," several neighbors said.

But shortly after midnight Monday, Stokes' eccentric behavior turned deadly when he repeatedly stabbed Stephanie Clory, a 45-year-old mother of three, and dragged her mutilated body out to the sidewalk, police said.

Clory, stabbed multiple times in the face, chest and back, was pronounced dead at the scene at 12:06 a.m., police said.

"I just hope and pray she had enough time to say, 'Lord, have mercy,' " said Clory's mother, Willie Clory.

Stokes was arrested Monday and charged with murder. Police last night were unable to confirm where the arrest had taken place.

Eight of Stokes' neighbors on Peach Street near Warrington Avenue, who spoke on the condition of anonymity, said that his personality was unusual, to say the least.

A 48-year-old man and an elderly woman said that Stokes, who had two surveillance cameras on his front porch, would come outside in the middle of the night and curse for no apparent reason.

"Late at night, he'd scream like he was a coyote," the woman said.

Several neighbors said that Stokes would dress in a "Star Trek" uniform, replete with boots and a communicator pin, and that he often wore a Superman costume and rode his bicycle around town.

A 51-year-old woman who grew up on the block, and whose 70-year-old mother still lives there, said that Stokes also dressed like Tarzan and would stand on the porch beating his chest.

"He was just really crazy," she said. "He was spooky, he was scary."

Two other neighbors said that they once saw Stokes wearing buttless chaps - and nothing else.

He would hang out at the library, the local water-ice stand and the 18th Police District station, at 55th and Pine streets, where he would watch preliminary hearings, neighbors said.

Creepiest of all, several neighbors said, was that he would hang around elementary schools as they were opening and letting out for the day.

A neighbor who saw Clory's body said that he initially thought that she had suffered a bullet wound to the head, because the stab wounds were so big.

"I ain't for the death penalty, but this guy can have it, he needs it," the neighbor said.

"The electric chair, the firing squad, hanging, the gallows. They need to do all that to him."

Willie Clory said that Stokes had been stalking her daughter, and that she had filed three police reports about him. The police-report filings could not be confirmed last night.

She said that she didn't know why her daughter was at Stokes' house Monday, but feared that Stephanie may have been picking up something for her when she ran into Stokes.

Clory said that her daughter, whose children range in age from 11 to 22, was a security guard who liked to dance, sing, laugh and joke.

When she heard the news from homicide detectives early Monday morning, Clory said, they had to pick her up off the floor.

"I had two kids, now I have one," she said.

"He doesn't know how many people he hurt, he doesn't know how many lives he destroyed."

A 35-year-old man was shot 10 times and killed in North Philadelphia last night, police said. The victim, who was not identified, was shot in the back, chest and arms on Germantown Avenue near Huntingdon Street and taken to Temple University Hospital, where he was pronounced dead shortly after 10 p.m., police said.

Shooting kills man in Parkside

A 30-year-old man was shot to death early yesterday on Thompson Street near 51st, in Parkside. Police said that the man, whose name was not released, was shot multiple times in the chest and back. He died at 12:20 a.m. at the Hospital of the University of Pennsylvania.

Tipsters can call 215-686-3334.