Avengers Mansion (Interior)

"Sir, external teleport detected," said Jarvis

"Avengers, stay sharp, we might have company in a minute," said Tony "And I don't think it'll be the nice kind."

A strange, coloured light appeared, and once it had disappeared, a blonde haired girl appeared. She had her hair tied into a ponytail and it was draped over her left shoulder.

"My name is Jenny," she said "And I want to join the Avengers."

Avengers Mansion (Briefing Room)

"What do you think?" asked Tony "She's a bit young, but we can train her up a bit."

"She has a look in her eyes," said T'Challa "A look that I can't quite place, sort of somewhere in-between Captain American and the Doctor."

"Like me?" asked Captain America "What do you mean like me?"

"Either out of her time," said Panther "Or a soldier, I'm not sure which yet."

"We should talk to her," said Wasp "Find out if she has any connection to the Doctor."

"If she has a connection," said Hank "Perhaps she can help us fight the Cybermen."

"Let's give her temporary membership," said Natasha "Until we can decide if we want her or not."

"I agree," said Thor "If she has a connection to the Doctor, we have to find it."

Avengers Mansion (Interior)

"You will be accepted to the Avengers on a temporary basis," Thor broke the news to Jenny "We could do with your help, we know that there is going to be an invasion of Earth by the Cybermen."

"If you know anything that can help us, now is the time," said Clint

"My name is Jenny," Jenny repeated "I'm a generated anomaly created on the planet Messaline to fight in a war between the human and hath colonists, centuries in Earth's future, I was replicated from the Doctor's DNA taken by a Progenation machine, technically, I'm his daughter."

"You're the Doctor's daughter?" asked Tony

"Yes," said Jenny "The Doctor managed to stop the war on Messaline and activate the Source, a terraforming device meant to make barren worlds habitable, then the leader of the humans, General Cobb, tried to shoot him, I took the bullet myself, I died in the Doctor's arms, then the Source brought me back to life, but the Doctor was already gone, I stole a spaceship and flew off into the stars."

"How did you get here?" asked Tony "That sounds like it were years in Earth's future."

"I met a woman in a bar, her name was River Song. She gave me a Vortex Manipulator and told me to enter these coordinates, and here I am," said Jenny

"A Vortex Manipulator?" asked Steve

Jenny pulled up her sleeve to show him. "41st Century time travelling teleport device, River Song said she wouldn't need it anymore, she seemed so sad…"
"Well, you're an Avenger now," said Janet

"What's your combat training?" asked Natasha

"I was programmed by the Progenation machine with unarmed combat as well as the guns in use in that time," said Jenny "They didn't program me with much else, not even a name."

"Well, let's get you in the training room and see what you can do," said Natasha "You may choose a sparring partner, or you can do an individual training program, what will it be?"

"I'll choose a sparring partner," said Jenny

"Who do you want?" asked Tony

So, who should be Jenny's sparring partner? Who do you want to see face off against the Doctor's Daughter?

Next time Jenny vs ...