Disclaimer: I don't own Young Justice or any of its characters. Really, I don't.

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Title: Justice in all its Forms and Sizes.

Clark blinked at the exposed face of the man before him, seeing it for the first time. He took in the deep cobalt blue eyes, an almost defiant gleam in its depths as he looked up at him, the already familiar chin lifted. The short dark hair disheveled and damp with sweat, the chiseled, aristocratic features on his pale young face -too young, Clark's mind whispered troubled- cheeks glowing with a faint rosy tint.

All that without even mentioning the severe look on his face that surely made him look older than he really was.

"You are-"

"Yes. I'm Bruce Wayne."

That was not the question Clark had been about to , learning that the man he had convinced to join the League after one single joined battle and who had effortlessly ascended to a position of power within the League in only a few months ever since; commanding the attention and respect -and fear too- of dozens of super powered beings bigger and physically stronger than him, was not only just a human, but a boy was more important than the fact Batman was apparently the Wayne billionaire heir.

"You- How old are you?"

"18."

"Batman has been active for over 2 years."

"Almost 3 years, yes."

"How can you..." Clark tailed off, not sure what he was asking exactly. His mind still reeling from the fact the man- kid behind the Bat's mask wasn't even old enough to drink legally, and yet, he spent his nights in rooftops acting as Gotham's protector, beating bad guys and saving people. It made no sense.

Clark himself had already started saving people at that age in Smallville, but it was different when he was invulnerable and had powers to help him, rather than the training of a few years and nothing but a Kevlar armor and makeshift weapons to protect him. Who was this kid, who could do all that while also fooling every person he ever came in contact with as Batman? Maybe it was the air of easy competence he effortlessly carried around all the time. Or the power and resolve radiating from him in the middle of a battle. The sharp intelligence and unflappable exterior when faced with any kind of world shattering incidents.

How could someone that looked so young appear and act so old at the same time?

"I've taken self defense classes for years." The younger man answered, and it wasn't until then that Clark realized he had dropped the Batman growl, and was speaking in a deep and resonant voice. He shrugged, the movement graceful under the heavy armor. "Age doesn't matter when you have an adequate training. It's all about strategy and discipline."

They stayed in the middle of the desolate planet, looking at each other.

What were the odds of Batman sending a kid to pose as him for this particular mission? Somehow foreseeing they would crash on a desert planet with a searing red sun above their heads, making it impossible for Batman to keep his cowl and cape (taking out the cape and cowl was as far a concession as Batman was going to make) if he didn't want to pass out from the high temperatures? No very high, he had to admit. Though he wouldn't put it past Batman's apparently non-existent dry sense of humor.

Any lingering doubt Clark could have had -not that he truly did- about this kid being really Batman were dissipated when he caught the familiar sound of an almost inaudible exasperated huffed sigh coming from his mouth. Clark could recognize Batman anywhere for that small noise alone. He had already lost count of how many times he had heard it.

"Can we stop wasting time on this when we are stranded on an inhabited planet, with no way to communicate the League our exact location, and without having found a single source of clean drinking water after almost 4 hours of looking."

"I- You're right. I was just... surprised, that's all."

Bruce gave him an unreadable look, but out of the corner of his eye Clark caught the smallest twitch in the fingers grabbing the discarded cowl and cape, as if he were considering putting them on again. He didn't. Bruce simply turned his face away from him for a second before looking back.

"We need to keep moving."

"Right."

Clark watched Bruce turn to keep walking, heading in the direction they had been walking before stopping. It didn't feel right, leaving things like that. That Bat- Bruce, the most reserved and private person he had ever met, had been forced to reveal his secret identity, and yet he still didn't know Clark's. It wasn't fair.

"I'm Clark Kent." Bruce stopped in his tracks as Clark called, but did not turn around. "I'm a reporter from the Daily Planet in Metropolis."

Two, three beats passed before Bruce turned slightly to look over his shoulder, letting Clark see a dark arched eyebrow as well as the smallest twitch of his lips. He heaved a sigh. "You already knew that."

"Yes."

Clark watched Bruce's retreating back for a moment as the younger man started walking away without another word. He shook his head with a small smile before hurrying to catch up with him.

...

a/n: This fic was inspired by a headcanon/idea, as well as a few other in the same tone over at Buckingham Alice tumblr. Here is the first of them: "Omg. Bruce being the youngest of the Justice League. I had never thought of it. Just imaginge the whole JLA discovering it and starting to threat him differently because he is not only the only non-powered JLA member, he is also the baby"

What do you think? I may or may not add a second shot with Bruce confronting Clark for for treating him different after learning who he is, so let me know if you would be interested in reading a bit more of this!

I'm also not native speaker, so go ahead and point out any mistakes you find!