Experience Tumblr like never before
Tim went mad scientist during the search for Batman and he cloned himself just in case he died. The objective was to retain all knowledge even if the original was dead, so he wore a chip that would feed knowledge to the clone that was in stasis.
All of this was a contingency for Ra's interest and the LOA's meddling. However, it so happened that Phantom was launched across universes and he landed by complete coincidence inside the gestating clone. The overshadowing was so shocking that it put Phantom to sleep for a couple of weeks. When he woke up, the pod sprang open and Danny fell down to the ground face first. Turns out Tim's heart flatlined for a couple of seconds while he was trapped with the LOA, and that was enough for the clone to be released and the chip connection to be cut.
Now Danny, naked and completely bewildered, is having contrasting information in his head about himself. He's Danny Fenton, half-ghost screw up, and he is at the same time Tim Drake, genius superhero that just died at the hands of Ra's. He has to investigate how to go back to his own world and he has to look into Bruce's disappearance to bring him back.
The whole thing is a literal headache, and Danny settles for using the gadgets and clothes Tim had left for him.
Having the brain/memories of a genius comes as a gift. However, Danny still doesn't realize that he's overshadowing someone and goes out to do some recon of his own.
He wants to see if there's really a Batcave in Wayne's basement.
It was only supposed to be a simple mission. Red Robin and Nightwing were sent to investigate some magical ruins that might have a lead on one of thier shared cases. Kon had practically begged to come along since he and Tim hadn't seen eachother in a while. Nightwing didn't see a problem with it so off they went.
It was later that night when they were asleep in thier tents (Timm was forced to sleep via the power of kons puppy dog eyes) that something strange happened.
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Phantom wobbled a bit in flight. He didn't know where or when he was. He had just escaped his parents after they saw Vlad transform and in a fit of rage, Vlad outed Danny too.
Vlad was killed pretty quickly. But Danny? They tried to "fix" Danny. It was only thanks to Jazz freeing him that he could bolt into the Ghost Zone and disappear. And bolt he did. He went so far so fast that he didn't even notice when he re-entered the living realms and just kept going.
Not wanting to make his situation worse, he decided to bed down for the night. His wounds weren't exactly healed but they were closed and that was what really mattered. He phased the blood out of his clothes as he silently approached a camp. Thier fire was out, properly drenched too. Danny had a thought to swipe some food but decided not to. Not out of morality, desperate times and all that, but because he physically couldn't muster up the energy to do anything more than curl up on the grass and pass out from exhaustion.
Needless to say when Tim wakes up the next morning and sees what appears to be a younger version of himself curled up outside he freaks out. He sneakily snags a sample and compared it to his own DNA and, suprise! Its a match. Aside from the obvious marks of cloning in his genetic structure and this odd unknown element sticking to it he was a perfect match for Tim Drake Wayne.
Nightwing woke up to find Tim standing over his unconscious mini and muttering about him being a dad. Dick was glad he packed that expensive coffee. They were all going to need it.
Kon was just excited to be an uncle.
After developing the ability to trap ghosts in pocket dimensions where they can feed thier obsessions without bothering him, Danny and co begin to grow bored and explore the Infinite Realms.
Danny had always known he was a clone, with his earliest memory having been being kidnapped from the lab he was made in -via people he still didn't know to this day-and shoved through a mysterious blue portal before being found by the Fentons. Danny accepted he didn't know who his biological parent or parents were and probably never will.
Thats why he was even more shocked than his friends when they went to a place called Gotham and met someone who looked like an older (or in damians case: younger) version of Danny.
Now Danny had a few options for a response. Sure he and his friends could just run but where's the fun in that? He could:
1. Give them a tearful look and say "Dad? Is that really you?"
This can also be said as mom in case of Cass or Selina
This is funniest if its said to either Tim or Damian because Danny is like 15 in this and Tim isn't that much older than Dannys appearent age and Damian looks younger than him
2. Stare at them and say, "Oh, you're the person I was cloned from?" And act like everything's normal. Maybe ask if they need an organ and if thats why they tracked him down.
3. Ignore it and act like its a coincidence they look exactly the same.
4. Act scared of them. Maybe beg them to not kill him for added dramatic affect
5. Ask if they like dogs and shove Cujo into thier arms before they can answer.
They suddenly get rapid fire sniffs and then a torrent of puppy kisses.
6. Panic and trap them in a pocket dimension like the ghosts and have to figure out how to get them out before they get in trouble. Maybe its too late and they have to get them out while dodging bats
7. Try to convince them they're hallucinating
8. Just let them sneakily take a sample of his DNA just to see what happens. Dont even acknowledge the clone thing. Even if presented with the dna tests, Deny, Deny, Deny.
9. Convince them they and the others knew about him for years and that they're memories may have been altered. Escape when their guard is down/they're not looking.
10. Pineapple. Not really sure how that will help but now there's pineapples everywhere. Danny might be hungry if he's teleporting fruit into his vicinity from just a thought, but that may also be because he's suddenly developing teleportation powers.