Watchtower-Earth 52.

Ben Tennyson has saved the universe more than I can count or fought crime since he was ten. He made a lot enemies. Aliens, regular criminals, warlords, magicians. He's been named as savior of the universe or hero of heroes. He also made powerful friends along the way. Professor Paradox, Azmuth, Rook and list goes on. He dealt with multiverse before but that experiences were guided by Paradox and Ben knew what to do. He met some red headed spy girl, a ghost dude, don't forget Rex, two heroes from Europe and even he gained new alien from that Spider dude's enemy. So he has multiverse friends but this time nope cause he came here by accident and now he's in the watchtower meeting room, discussing his current situation with main seven of the League.

"So you started when you were ten?" Flash asked. He was impressed by Ben so far.

Ben nodded slightly. "Yeah. Been superhero since then, although I had a break for while." Everyone seemed to watch him and his expressions.

"How are you able to transform into aliens?" Batman asked this time. He was more focused on his abilities than Ben himself but of course this was Batman.

Ben lifted his left wrist and showed the watch to JL. They seemed fine people to Ben. Unlike some superhero group from his home universe. "This is called Omnitrix. A dna watch made by Azmuth, smartest being in five galaxies back at home. It's bonded with my dna. You can't get it off without killing me. It allows me turn into over a million alien spices and use their abilities. Weaknesses is there too of course."

Ever eye in the room except Ben and Batman were wide open now but Batman was shocked too under the cowl. Superman nearly chocked on his water. "Over a million?" He asked dumbstrucked.

Ben nodded shyly. "Yeah and I can add it more if I find uncataloged DNA." As soon as finished his sentence Omnitrix glowed yellow. "Three uncataloged DNA detected. Scanning." Three yellow beams shout out from Omnitrix and scanned Superman, Hawkgirl and Martian Manhunter. "Scan complete. New Spieces Acquired."

"What was that?" Lantern asked immediately. Ben grinned and explained. "Like I said I can add more aliens and now I can turn into whatever you three are. Of course this watch is more than just transforms, it can cure genetic diseases for example." Everyone was shocked again, this time Batman too.

Flash rushed to Ben and smiled. "So you can turn into Kryptonian, Martian and Hawkgirl's spices. Their name are so confusing." He was like a kid see magic tricks.

Ben was looking at J'ohn. "Dude are you a Martian? That is so cool. Back at home we didn't have Martians, and answer to your question Flash, yes I can."

Batman seemed more interested now. One kid has all of these powers, he's like the most powerful being in the multiverse. "Why did you chose to be a hero?" Dark Knight asked. He wondered what drive Ben to way of justice.

Ben's goofy face now was changed with a more serious face. "I always liked helping people. Omnitrix or not, this is way bullies messed with me more than anyone at school, cause I stood up to them when the other can't." He chuckled a little. "My ass was kicked but it was right to me. When I got the watch, I finally had a real opportunity to help people. Of course me being ten years old thought being hero was getting praised or loved all the time. It took a little time to for me to learn that it's not the case. After a while watch became a burden and I had it removed. But when grandpa got lost while investigating an alien case, I had my doubts but I wear it again because of people in need. Since then never stopped being hero. I can be seem as a kid who's goofing around with the most powerful weapon in the universe but when you need a superhero I get the job done."

Everyone's face softened now, Even Batman's. Martian Manhunter decided to speak up. "That is very noble of you Ben. People are lucky to have you as their protector." Everyone nodded, showing that they agreed.

Ben smiled again. "I can't take all the credit though. I had a lot of help along the way but no man is an island. Even me." This made the group of superheroes smile.

Superman decided to speak up. "Since you are stuck here with no way coming back, for now at least. We like to offer you a membership in the Justice League. Also of course with Batman's help you can get an ID and backstory, so you won't be a ghost."

Ben's grin grow even bigger. An offer to join to big superhero league. Now that's not something you get everyday. "Of course I'd be honored and as for the identity no worries." He said and talked to Omnitrix. "Omnitrix can you create an ID and backstory for me?". Few seconds later Omnitrix responded. "Everything is set and uploaded Master Tennyson. I recommend to go to nearest police station and retrieve your ID, license etc." Everyone was shocked again, this watch was just perfect.

"Your watch is just wow kid." Hawkgirl break the silence. No one in this universe saw something this advanced and cool. Flash brought up an interesting point.

"Where is he gonna live though?" He asked. Ben totally forgot about that part.

"I'll take him with me." This came from Batman and nobody excepted Batman say that because c'mon he was Batman.

Diana turned to Bruce with a lifted eyebrow. "Are you sure? It's not like you to take people you just met to you know where." Bruce simply nodded.

"Normally I wouldn't but from the images J'ohn shown us telepathically, Ben is a fine young man and great hero. Also Omnitrix is a wonderful device so we need avoid wrong people learn about it. At least until Ben get use to this world. Plus he will need guidance and a mentor. I'd be honored to do that for him." Batman said. Everyone was suprised, Impressed Batman was not something you everyday. Hell seeing him like this was a pretty rare moment. Of course Ben wasn't that suprised due to him being new to this world.

"Wow man, don't know what to say but are you sure? I don't wanna be a burden." Ben said. While he appreciated the help he was getting, he didn't want to bore people with his problems.

"Dude soon you will see that you are not gonna be a burden to him at all." Flash said and winked.

"Like he said, you won't be a burden. I'll call Alfred and give heads up then we can leave in couple hours." Batman said and slowly left the room.

"Getting prasied by Batman like that is very rare. You are something else kid." Green Lantern said and smiled at Ben. Ben smiled back but a second later his face showed confusion.

"Who is Alfred? He's sidekick or something?" Ben asked. If he gonna hang out with Batman, he should know it.

Superman chuckled. "More like Batman is his sidekick." This comment made superheroes laugh, minus Ben.

Wayne Manor or Batcave-Earth 52 (2 hours later)

After Batman made the arrangements and add Ben to memberlist, they teleported to cave. Now Ben is holding his head and trying to stand up.

"After all these years you thought you can get use to teleportation but no sir." Ben said as he gathered himself together.

Batman simply said "Follow me." and walked away. Ben tag along right away. Not wanting to get lost in a huge cave. After a little walk they stopped in front of large computer. Ben was looking around like a six years old kid. Old suits, souvenirs from his battles, Batmobile.

"This place is super cool dude. Wish had my own base. Although Plumbers base was super cool too." Ben said and walked towards to Batman again. Batman slowly removed his cowl and there was a blue eyed, black haired man. He reached for Ben hand's.

"Bruce Wayne." Ben shook his hand back. "Well you know who I am." Ben said with a little chuckle. He rubbed his neck while saying it. A clearing throat sound got the attention of two superheroes. When Ben turned to face an old man with a suit. Only have hairs on sides of his head and a little moustache.

"You must be Master Tennyson. My name is Alfred Pennyworth." Ben quickly shook his hand. Ben didn't know why but Alfred seems like an awesome person.

"Nice to meet you. I heard Batman is your sidekick." Ben said with a smile. Ben already figured Bruce Wayne was rich cause his equipment and base and figured this was his butler but messing around never hurts. His comment made Batman rolled his eyes and gave Alfred a little smile.

"Yes, Master Bruce is my right hand and life time companion." Alfred said. Decided to play along.

"So you are like me and my grandpa. Nice." Ben said. Bruce decided to cut in.

"Alfred is my butler and everything else, I'd be dead without him. He will show your room and of course help your way around the house. Right now Robin and Nightwing are with Titans and Batgirl is not available. You'll meet them tomorrow." Bruce explained the situation to him.

Ben simply smiled. "Cool."

"Shall we then Master Tennyson?" Alfred offered. Ben nodded with a smile and start following Alfred. Before they reached the stairs Bruce called out his name.

"Ben." He stopped and look at Batman. "Welcome to Bat-Family." Batman said with a smile.

Ben simply smiled and start walking again.

"I'M NOT GONNA WEAR CAPE OR TIGHT."

We left another chapter behind. Now as for Ben's new aliens, don't forget to drop your name recommendations. As for Martian form I kinda thinking Martian X but for Kryptonian or Hawk dudes, I haven't decided.

I DON'T OWN BEN 10 OR JUSTICE LEAGUE.