Disclaimer! I do not own Young Justice otherwise I wouldn't have canceled it.
One day, after school for all the team members (an especially boring day for Robin) they were all sitting around the living room when The Flash came in saying something about Haly's Circus. This caused Kid Flash and Robin to tense up. "Hey everyone! I got tickets for the mentors and the team to go to Haly's Circus. Isn't that awesome?" said Flash. The response from everyone was mixed. From everyone that knew that Robin was Richard 'Dick' Grayson was slightly worried about his and Batman's reaction. They were surprised when Robin let out yell of excitement.
"When do we leave Flash?! I can't wait!" responded Robin while Batman laughed and was smiling. To say that everyone that was not Robin was surprised was an understatement.
Superman had to ask, "Wait did Batman just laugh and smile?!"
"Uh huh. At home Bats laughs all the time." Robin answered Superman. "Did you guys just think I did not live with Batman? Well news for you I'm Batman's son."
"Wait what? You're Batman's son!?" KF exclaimed. "Dude, I've known you ever since I started out as a superhero. And now you're telling me?!"
"Calm down KF I'm adopted. But he is my dad." Robin said.
"Yes, I adopted Robin a little over eight years ago when he was five. He was in training to become a hero when he was six and officially started as my partner when he was nine." Batman elaborated. "Actually Robin can I speak to you?"
"Sure." Robin replied. He was a little nervous. He hoped he wasn't in trouble. "Listen, Robin." Batman started. "Your siblings have to go with you and you can tell the team your secret I.D."
"Thanks Dad." Robin said. "I can't wait to be a troll to them and surprise them. Tell the little monsters to call me my real name. Ok?"
"Sure Dick." Batman answered. " And I'm coming with you."
Robin and Batman were smiling a smile that clearly said 'I am up to no good' They expected that smile/smirk from Robin but not Batman.
The Next Day (Time Skip)
"Come ON people! Let's get a move on. I can't wait to see everyone again." Dick said in his civvies.
"Ok, Ok! We're comin'." Everyone said. When everyone saw him they were all taken aback. Well, except Batman and his siblings.
"Hey Dick what are you doing in the mountain?" asked Artemis.
"Hey Dick, did your dad say it was ok to reveal it?" Kid Flash questioned.
"Yep. And don't you recognise me Arty? If I don't recall, I said we would laugh about this some day?" Dick answered mysteriously.
"Oh! Why you little Troll! Robin!" Artemis exclaimed. Then laughed.
"It was a good one wasn't it?" Dick said. "Oh, and if you guys hear me talk my first language romani don't freak out. It's normal and I only do it when I'm really pissed."