For Halloween Xander dresses up and the generic soldier, he even has dog tags. Dog Tags that once belonged to Snake Eyes.

Once the spell end Xander kept all the skills and knowledge that Snake Eyes had at that time, including all the knowledge and secrets Snake Eyes has about GI Joe.

Now being an honorable man Xander wrote to Snake Eyes to warn the older man about himself and to ask for advice. Snake Eyes remember some of what happened that night decided to keep quiet about Xander and start to writing back and forth with Xander.

Of course the problem with secrets is that eventual someone will find out about the secret and in this case Cobra does. Cobra Commander orders the capture of Xander Harris. Of course once GI Joe finds about this plan they also send people to Sunnydale to protect Xander and find out why Cobra wants him.

So now it is a race to see who gets to Xander first and to see who can survive Sunnyhell.

Tony Stark, Nathan Stark & Xander are all at least half brothers, with Nathan and Tony having known each other previously.

Xander runs away from home as a teenager{14-17(due to abuse, backstabbing, injury...all of the above...)} and runs into Tony, ends up saving his life, which eventually leads to them finding out the family connection.

Tony and Nathan join together to help and get to know Xander, ensuring he gets extensive, effective & excellent Healing, Therapy, Tutoring and Self Defence Training{in case he gets kidnapped}

Slowly they each form a strong and solid accepting/protective/loyal/resiliant/ perceptive/ healing/in-depth relationship with each other - in the case of Tony and Nathan it also means healing at least some of the personal hurts/issues with themselves and each other 

No one outside of the brothers and JARVIS know of the family relationship or who Xander was previously, and they try and keep it that way even after the death of Stane.

All three are skilled BAMFs, Engineers, Business Men, Humanitarians, Façade Wearers, Secret Finders & Keepers{includes the Supernatural world}, Fighters, Linguists, People Readers... 

Bonus points if all three are natural shifters, hunters, sentinals/guides, immortals or psychics...

Double bonus points if all three are either gay or bisexual {possible lovers Jack Carter, Phil Coulson, Clint Barton, Bruce Banner, Jack Harkness....}

Triple bonus points if sometime between sunnydale and meeting tony Xander somehow looses his memories

Quadruple bonus points if none of the Starks are in awe of Steve Rogers and in fact have issues with him

Just imagine Fury reaction to learning there are three Starks running around :D

"Ladies, gentlemen and gentle being, welcome to the first annual hero strip poker competition," a human appear woman said as an introduction. "I am Erin your host for this little event."

"Now I know you're wondering what exactly is hero strip poker," Erin said as she hit a switch. A wall ascended reviewing a room in which a number of good looking men seem to trying to find a way out. "As you can see I have collected a number of the best heroes from across the global for our competition. We have the loyal and fierce Xander Harris, the fiery Hornito Caine of Miami, the brave Colonel Jack O'Neill and so many more."

"Can they see us?" one of the competitors asked.

"No. The viewing wall is made up of a one way viewing matter," Erin explained. "So we can look in and they think it's a regular wall."

"So how exactly is this hero strip poker?" another competitor asks. "I mean we are the ones playing poker, so how are they going to strip?"

"I'm glad you asked that," Erin said with a smile as she signed her men to remove a box reviewing very life like dolls of the heroes. "Now what we have here are some life like dolls that are connected to our heroes."

"Are the dolls anatomically correct," one of the competitors giggled.

"Very," Erin purred. "The dolls are so exact that you can tell if your hero is cut or not or if they have any pierces anyways"

Those gathered for the game broke out into giggles.

Erin continued on. "And before you ask, yes the dolls to send back to the hero limited feeling. You can't hurt them but you can touch them"

Erin demonstrated this by stoking the hair on a silver head doll, the room the men were being held, Special Agent Gibbs touched his hair, his eyes wide as he looked around for whoever touched him.

"Now when you checked in and exchanged your quarter of a million dollars for chips you received a number," Erin explained. "Very shortly we will be pulling number out of a hat and that person will be able to choice their hero. Now don't worry if you don't get the hero you want because you'll have the chance to win him later."

"We are following standard strip poker rules in which clothing, their clothing will count as bets. See the rules that were handed to you for how much each item of clothing counts for," Erin said.

"So let me get this straight, we're playing poker with chips and dolls," a competitor said.

"Not exactly. Let's say you bid the pants from your hero and you lose," Erin said. "Not only do you lose the money you had in the pot but your doll and the hero the doll represent," Erin turned towards the men that was being held captured, "loses their pants."

"So they'll end up naked," a competitor said with a smirk

"Only if you're a bad player," Erin replied. "The first day will weed the competitors down to the top five players. The next day will be a winner takes all. All the cash and all the heroes."