“Are you sure about this, kid?” he asked, eyes fixed on the teenager standing before him. “Once you step into this world, everyone in it will know you. Once you enter… there’s no going back. No escape.” He wanted to make this clear. He wished someone had warned him the same way.
The boy met his gaze, determination blazing in his blue eyes. “I was born into this world without even knowing it,” he said, voice steady. “But I refuse to be powerless in a world full of power.”
He studied him for a long moment, weighing the resolve in that young gaze. Finally, he nodded. “Alright. Come with me. I’ll teach you everything you’ll need to know.”
The sky over Metropolis was wrong. Red lightning forked across bruised clouds as horned, winged demons poured from jagged rifts, the remnants of a cult’s apocalyptic ritual. Too many to fight. Even the Justice League struggled.
Superman slammed a massive demon through a collapsing skyscraper—but two more took its place. Wonder Woman’s sword flashed with divine fury, yet the creatures pressed on. Green Lantern’s constructs shattered under waves of hellfire. Zatanna’s spells flickered, strained. Constantine, bloody and exhausted, lit another cigarette, muttering counter-charms under his breath.
“Yeah,” he coughed, ducking as a screeching demon passed overhead, “this is officially pear-shaped.”
Batman’s voice cut through the chaos. “Containment is failing. We need—”
A ripple ran across the battlefield. Subtle at first, like a drop in pressure, then stronger. Every demon froze. Not hesitated—froze. Even the red lightning halted mid-fork, as if time itself had tripped. A new presence had entered.
“…Oh,” Constantine murmured, blinking twice. The temperature dropped sharply. Then—a boy appeared. Completely out of place. Black hair streaked with white, pale skin, glowing green eyes slicing through the hellish light. He wore a black-and-white jacket three sizes too big, hands in his pockets, looking—bored. He scanned the destruction, the demons, the League.
“Wow,” he said flatly. “You guys really let this get out of hand, huh?”
Superman hovered, stunned. “Who—”
A massive demon charged him. The boy didn’t move. He tilted his head slightly—and the demon imploded, collapsing inward as if it had forgotten how to exist. Silence. The boy exhaled. “Okay. Seriously? I leave for like… a few years, and you let Hell do a home invasion?”
Another wave surged. This time, he moved. Effortless, precise. Green energy flared—not chaotic, not explosive, but absolute. He raised a hand, and the oncoming horde froze, suspended like insects in amber.
“That’s… not any magic I’ve seen,” Zatanna whispered.
The boy flicked his fingers. The demons vanished. Not exploded, not burned—just gone. Like they had never existed. He rolled his shoulders. “Better. Now—”
He looked up at the sky. The rift. Something massive stirred. Something ancient. He squinted. “Oh. You’ve gotta be kidding me. They sent that guy?”
Batman stepped forward. “Identify yourself.”
The boy glanced at him. “…You’re the Bat guy, right? Cool costume. A little dramatic, but I respect it.”
Before Batman could respond, the rift split wider. A colossal demon emerged, wings blotting out light, a voice like grinding continents echoing through the city. Heroes tensed. The boy groaned. “Ugh. Fine. One second.”
He floated up, casual, like gravity was optional. “Hey,” he called to the demon, “yeah, you. Big, ugly, breaking-the-fabric-of-reality guy.” The demon roared. The boy raised a glowing hand. “Door’s closed.” Snap. The rift slammed shut, the demon’s roar cut mid-sound. Remaining creatures disintegrated instantly. It was over. He floated down, brushing imaginary dust off his sleeves. “…Okay. Now it’s over.”
Silence. The League stared. Batman stepped forward. “You’re going to explain—”
“Danny?!” A blur of trench coat and messy blond hair slammed into him. Constantine grinned like a child seeing his hero. “Bloody hell, it’s actually you!”
Danny blinked, smirked. “Wow, Johnny. You look… terrible.”
Constantine laughed. “Well, saving the world’ll do that to you!”
Batman’s eyes narrowed. “John. You know him.”
“Know him?” Constantine barked a laugh. “Bats, this is Danny.”
Danny lazily waved. “Sup.”
Batman remained unimpressed. “That tells me nothing.”
Constantine ran a hand through his hair. “Right. Of course. This is the guy who taught me everything I know.”
Zatanna’s jaw dropped. “John… what?”
Constantine nodded. “Met him as a teenager. Thought I was summoning something minor—ended up summoning him.”
Danny snorted. “You butchered that summoning circle. Still offended.”
“You showed up anyway!” John shot back.
“Curious how someone could mess up that badly and not blow themselves up,” Danny shrugged, smirking.
Batman’s voice was cold. “He trained you?”
Constantine nodded. “Magic, demons, the whole ugly business. Kept me alive long enough to become the charming disaster you see today.”
Danny crossed his arms. “Partial responsibility. Mostly for the ‘alive’ part.”
Superman studied him. “What exactly are you?”
Danny tilted his head. “Straight to the existential, huh?” Floating slightly, green energy humming, he said casually, “Ghost King. Long story. Short version? I deal with stuff like this.” He jerked a thumb toward the vanished rift.
Zatanna whispered, “That level of power…”
Batman’s gaze sharpened. “If you’re that powerful, why weren’t you here sooner?”
Danny’s expression flickered briefly, then sarcasm snapped back. “Wow. No ‘thank you for saving reality’? Tough crowd.” He shrugged. “I’ve got my own world to deal with. Ghosts, invasions, evil versions of myself… you know, teenage stuff.”
Flash blinked. “Not usual teenage stuff.”
Danny grinned. “You’d be surprised.”
Constantine clapped him on the shoulder. “The point is, we’re lucky he showed up at all.”
Danny glanced at the battered heroes, then back at John. “…You did good,” he said softer. “Didn’t die. I’m impressed.”
John smirked. “High praise coming from you.”
Batman stepped closer. “If another invasion happens—”
Danny groaned. “Oh my god, already planning a sequel?” He floated back, hands behind his head. “Relax, Batman. If it’s big enough, I’ll know.” He winked. “And I might even help again.” His form flickered translucent, green energy humming.
Constantine raised an eyebrow. “Already leaving?”
Danny smirked. “Homework. Ghost homework, but still.”
“Right,” John chuckled. “Wouldn’t want you falling behind.”
Danny saluted. “Try not to summon anything you can’t handle, yeah?”
Danny grinned. “See you soon, John.” And he vanished.
Silence fell. Flash finally spoke: “…So, you were trained by a sarcastic ghost teenager who can delete demons and close reality rifts like doors?”
Constantine lit a cigarette. “Yeah. That’s him. On a good day.”
Batman looked to the sky. For once… he had more questions than answers.
A week later, the Watchtower hummed with quiet tension. The Justice League and Justice League Dark had gathered in the main observation deck, still recovering from the near-apocalyptic invasion.
Batman leaned against the console, arms crossed. “Constantine,” he said, voice calm but insistent, “we need answers about Danny. Who is he? How did he gain that level of power?”
John Constantine exhaled a cloud of smoke, one hand lazily draped over the railing. “Answers, answers. You want answers?” His grin was wry, tired—but gleeful. “Alright. I can give you some… but you’re not going to like all of them.”
Wonder Woman raised an eyebrow. “We’ll take what we can get.”
Before John could continue, a soft green glow flickered behind him. He froze mid-sentence.
“Oh, come on,” Constantine muttered, spinning slightly, “he’s already—”
Danny Fenton appeared behind him, arms crossed, hovering casually a few inches off the floor. Glowing green eyes swept the room. “You rang?” His tone was dry, but there was a teasing edge. The room fell silent. Superman straightened. Batman tensed. Zatanna’s jaw dropped. Even Flash stopped pacing. Danny smirked. “Relax. I heard you had questions about me. Lucky for you… I like answering questions.”
John clapped a hand on Danny’s shoulder. “He’s a talker, apparently.”
Danny gave him a mock glare. “I’m a very patient talker. Especially for a week-old mess like this.”
Batman finally stepped forward. “Explain. Everything we saw—your abilities, your training. Who you are.”
Danny floated a little higher, shrugging. “You’ll have to narrow that down. My life is… complicated. And apparently chaotic by default.”
Wonder Woman folded her arms. “Then start with the basics. How did you learn to control your power?”
Danny glanced at John, giving him a small nod. “He’ll vouch for me. Trained me when I was your age—teenager John over here didn’t know what he was getting into.”
John waved, smirking. “Minor understatement.”
Danny turned back to the League. “Bottom line? I’ve been handling ghosts, demons, and things worse than you’ve even imagined for years. I learned fast because, well… someone had to.”
Green Lantern’s construct hummed nervously. “And the rifts? You just… closed them?”
Danny shrugged lazily. “Rifts? Doorways? Sure. If it’s messy, I tidy it up. I get bored otherwise.”
Batman’s gaze narrowed. “Your power… is absolute. Why aren’t you defending Earth full-time?”
Danny grinned, flashing a mischievous smile. “Earth is fun and all… but my world’s got homework, chores, family, existential crises. Trust me, balancing ghost-dimension diplomacy and teenage life is harder than it looks.”
Superman exhaled slowly. “So… you’re willing to cooperate? Work with us?”
Danny tilted his head. “Depends on the day. Today? Yeah, sure. I even brought John along as my… chaperone. Mostly because he begged.” He nudged John with his elbow.
John waved it off, trying not to smile. “I didn’t beg.”
Danny floated closer to the edge of the observation deck. “Actually, I’ve got an idea. You all want more insight? I can take you… a little tour.”
Flash’s eyes widened. “Tour?”
Danny grinned. “Yeah. John here wants to see my world, right? Might as well show you the place I’ve been keeping all those rifts tidy. Trust me, it’s a full-on, dimension-level field trip.”
Batman stepped forward, clearly skeptical. “You’ll answer questions, but we go with caution. No surprises.”
Danny snorted. “No promises.” He flicked his wrist, and a faint shimmer began forming behind him. “Ready, John?”
John smirked, his trench coat swishing. “Let’s do it. I get the first coffee when we arrive.”
Danny chuckled. “Deal. Buckle up, League. You’re about to see why ghosts, demons, and teenage sarcasm make a really fun combination.”
With a flick of his hand, green energy spiraled outward. In an instant, the Watchtower dissolved around them and reformed into the shimmering, surreal expanse of Danny’s home dimension—floating islands of glowing ectoplasm, haunted skies, and ghostly silhouettes moving in the distance. Danny hovered in the center, arms crossed, smirking. “Welcome to my world. Don’t touch anything… or do. I’m flexible.”
John stepped forward, grinning from ear to ear. “Told you they’d love it.”
Danny rolled his eyes, but there was a smile tugging at his lips. “Yeah, yeah. Let’s give them the grand tour.”
The League and Justice League Dark exchanged looks of equal parts awe and trepidation, realizing just how small their problems on Earth had been compared to the wild, unpredictable world Danny called home. And Danny? He floated above it all, still a teenager at heart even after a century, still sarcastic, still ready for anything.
