The Genie.

He gave it some thought for a second.
"..Yeah. That would look cool."

Dark snaps his fingers, giving him bat wings, and the knowledge on how to fly.

(You disappeared again :L Also we need some kind of storyline instead of doing nothing.)
There was a sudden shock as the nerves quickly wired themselves into his body, allowing the capabilities for his wings to move.
A quick turn of the head, and it was confirmed.
"..Wow."

(Internet was down for the weekend Anyway, how about someone finds out and captures Dark?)

"Yeah, bat wings. They are really cool...", Dark grins. He runs his hand along the wings. "Now, um, because they're so different, I can't hide them from anyone."

(Sounds good. And how about right after a wish that could potentially cripple me?)
A somewhat nice tingle ran down his spine from his wings being touched.
"Wait, so people will notice the difference?"

"Uh, yeah. You'll have to hide them.", Dark grins, leaning against a wall.

He just blankly stared at Dark.
"So much for a genie. I wish for something to cover my wings effectively. After this I'm thinking of going back into public."

Dark snaps his fingers, and an ordinary backpack appears in his hands. "It has holes in it, so you can put your wings inside.", he says, tossing it to him.

Catching the backpack, he carefully slid his leathery wings into the holes. It was surprisingly comfortable.
"Alright. Thanks. I wish I was now at the mall."

Dark snaps his fingers, making them appear right in the middle of the mall.

(Now, how about I wish for something which if left alone, become more and more of a problem. Like a progressive thing, and then you get kidnapped.)
He smiles.
"Thank you. Let's go see what we can buy." And off he went with a step.

(Alright)

"We can buy anything here.", Dark grins. "Hey, what's that?", he asks, looking at a Wii U.

He glances over to it.
"Oh, that's a Wii U. It's a video game console that recently got released. It has a wireless controller thing which you play on."

"Awesome....."

(I got the black one o3o... It doesn't need a TV, so I'm bringing it on Spring Break)

(Personally I'm waiting til Pikmin 3. Anyways, any ideas for something that could be wished for that could turn into a very large problem if left?)
"Haven't got one yet. I'm just waiting for the right time." He gave a little stretch, and the backpack pushed out a little, with the cramped up wings. Realising this, he stopped and looked around and made sure no one saw.

(Make something alive that shouldn't be? Such as making a action figure or something come alive?)

"Ah... Yeah, it looks fun."

(Possibly. That isn't really a major progressive problem, imo.)
"You want to go eat something?"

(Um, hmm... Something that's really bad.... A childish wish, like dinosaurs, or for a girlfriend)

"Sure, I saw something called 'pizza'"

(Hm. That could be arranged.)
"Alrighty then. Let's go."
As they were heading towards the pizza place he passed a store window with a few toy dinosaurs. This piqued his interest.
"Y'know, I used to wish these things were real. Only a bit, though."

Dark snaps his fingers, and they come alive. They were still plastic, but, they could move.

Unfortunately, he had turned away from the dinosaurs, so he didn't notice.
"Alright, let's keep going." As he began to walk away from the window, the plastic of the dinosaurs were becoming more and more.. real.
(That's acceptable, right?)

(Yep)

Dark bites his lip. He HAD wished for it... He turns around, following.

He walked into the pizza place together, but..
"Hey, Dark? Stay here for a bit. I need to go to the bathroom." He walked off, out of sight.

"Alright....", Dark blinks, sitting down.

(Now would be a good time to be kidnapped or the likes.)