How to narrow it down.

Tony groaned. This would take a while. But he pulled his achingly tired bones together and took the elevator down to the lower R&D levels of the Avengers tower. It definitely wasn't his first all-nighter and this was something he needed to do.

"JARVIS. I'm going to find my kids."

"Yes, sir. Shall we start with the western hemisphere?"

Not for the first time, Tony regretted programming his AI to be such a smartass. But it was practical.

"Sure. And we can go backwards from when Pepper and I... became a thing."

"Yes, sir. How shall we go about this? I can pull up all records of your..." The slight pause was tact coded into JARVIS' voice, "personal endeavors ever since I became active."

Tony grimaced. He did not look forward to sifting through that. Most of his endeavors didn't appreciate being dumped or escorted off his property.

"We can also search for any genetic matches within databases."

"Including criminal databases, sir?"

"Yes, JARVIS, we're going to find out who else I've screwed up for life. And line up a list of medical records of all the women I... you know."

"Indeed, sir."

Tony scooped out a blood-testing kit from one of the drawers underneath a worktable and spread out its contents on the table.

"I want the truth!"

"You can't handle the truth!"

It was funny how a brief flash of a movie he watched with the rest of the Avengers last weekend could make him so uncomfortable now. JARVIS would say it was the context of the moment.

He picked up a syringe.

"Been a while since I used these, eh, JARVIS?"

"It is an accomplishment, sir."

Tony sanitized the syringe (Banner had been thoroughly sure to show him a great big projection of a macroscopic image of all the germs on a used syringe) and began to draw blood from his arm. He then transferred it into a test tube.

"There you go." He slid it into a processor, "Have fun finding my offspring, JARVIS."

"Shall we run through possible candidates from my records, Mr. Stark?"

"Sure. Why not?"

JARVIS put up a wall of pictures. Tony exhaled. Great.

"Right, eliminate those without a history of pregnancy."

A handful tiles disappeared. He recognized a few of them, mostly power career women without interest in a family. Pepper wasn't a power career woman, was she? She was amazing, that was for sure, though.

"Now eliminate those whose pregancies occured after marriage, but only those in stable and financially secure families. Separate those who are in need of financial assistance."

He might as well do some good for other people who weren't screwed up by him but needed help.

Another handful disappeared.

"Now eliminate those who are married and are still with their spouses. I don't want to go barging into anyone's perfect family." Was that bitterness? He shook himself off.

More tiles were flicked away. A small but still sizable group remained.

"JARVIS, are all these women still alive? And are their children?"

Two tiles branched off into pictures of children but their mothers' pictures turned red and disappeared. Tony almost stopped breathing.

"It seems two of the women are deceased and their children are in the system."

"Find them. Contact a good agent. Make sure they get placed into good homes. They might not be mine but they deserve better."

"Yes, sir. Very good."

"Now call in someone good to check out the rest of these. I'm going to set up an anonymous trust fund."

"Shall I tell Ms. Potts, sir?"

Tony grimaced. It might be the "right" thing to do but he didn't want Pepper to know anyways. It was his problem and he'd fix it.

"Nah, it's fine, buddy. We'll keep this on the DL. Did you come up with any matches for my genes?"

Only one picture came up this time.

It was an older blonde woman, smiling broadly in what was obviously a driver's license picture.

"I don't recall her."

"A Mrs. Donna Smoak. She resides in Las Vegas and is employed as a waitress."

"She's too old to be mine."

"The genetic match came up for her daughter, sir."

The picture of the blonde woman branched off into another picture. It was of a young woman, who was also blonde with glasses and bright fuschia lipstick.

"Mr. Stark, do you remember the weekend you spent in Las Vegas when you turned 21?"

Tony laughed. Yeah, that was one weekend. Of course, he had been there before and had a lot of fun but it usually also involved bribing people. When he turned legal, no one could stop him from doing whatever the heck he wanted.

"Yep, JARVIS?"

"Well, sir, you must recall the company's effort to secure a divorce for you after a drunken marriage in 'Elvis' Chapel'?"

"Oh, that." Tony gulped. "That wasn't..."

"You had given your name, in a drunken slur, as 'Smoak' instead of your actual surname, Mr. Stark."

"And that woman, my daughter?"

"Felicity Smoak, sir. Resident of Starling City and assistant to Oliver Queen of Queen Consolidated fame."