This is a short story, based after Supergirl 2x08 and the Vampire Diaries 6x13 (Kai and Luke have merged so Kai is less murdery than normal)

Kara was annoyed, Mon-El was late for training. It was the 2nd time this week he had been late, so she was making her way to the Alien bar to see if he was there, it was 5 pm but he didn't seem to mind when he started drinking these days, when she saw him on the street. He was looking slightly confused, and a little different than normal, new clothes she assumed, he was wearing a boots and skinny jeans rolled up at the bottom, a white buttoned up shirt and a fitted black jacket, and was clean shaven, his hair looked slightly darker than normal. Rather than his normal faded blue jeans, trainers and grey coloured T-shirt.

She approached him, "Mon-El!" he ignored her looking rather at a group of people talking on the street corner, she was stood next to him, "Mon-El!" he still ignored her, so she softly slapped his arm, he turned to face her cocking his head slightly to one side without saying anything.

"Hello" he smiled in a slightly creepy way, looking a little too intense at her.

"Are you avoiding me?" she asked slightly concerned, it had been 2 weeks since they kissed and so far he still hadn't remembered it, and she hadn't mentioned it, but there had been a distance between them.

"I don't think so, should I be?" replied Kai Parker trying to work out who this woman was and who she thought he was. She was pretty, not that he cared for women, or men or people, a bit serious, and prim and proper for him. Didn't seem the normal person he would hang around with, not a lot of fun playing around with the sensible ones. And she thought he was someone called Mon-El, that's not even a real name, still this could be fun. A few hours ago he was walking to see Damon, who wanted another favour, he was cursing merging with Luke because he felt like helping people these days, and he didn't like that. The pangs of guilt when he saw people needing things were annoying, had put him off a lot of his preferred activities, making him think about would it impact him. There was suddenly a huge flash of light, his head hurt and when the light passed he was on a different street in a heap on the floor. A young couple had rushed to help him up. This confused him normally people avoided him, even those who didn't know him were aware enough to avoid him.

"We need to talk about this" Kara sighed, "Need to get over it" he studied her face trying to work out what she was talking about then smiled broadly.

"Are we romantically involved?" he asked, romance a strange concept to him, but women tended to not act this way with him normally, and from watching others it appeared she had mistaken him for a suitor.

"No" she blushed and grabbed his hand. "Come on, we are needed at the DEO"

Common sense told him not to question things so he could try to work out what was happening.

They rushed to the DEO, Kara didn't fly, she was in normal clothes and Mon-El couldn't fly yet, just as well for Kai who couldn't fly at all, and didn't know about superpowers yet in this world.

Upon arrival Winn beamed and put his arm around Kai's neck who jumped slightly at the physical contact. "Tonight we are going on a killing spree"

The Sociopath looked bemused and hopeful, "And who are we killing?"

"New game for the Play-station, you will love it" the computer expert beamed, Kai felt slightly disappointed. Feelings confused him. "8 at mine, James is coming as well"

"Kara, Mon-El we need your powers, we have a slightly difficult guest" Alex said as she entered the room, Kara nodded and in a flash changed into her Supergirl outfit. Kai bit his tongue against making a snide comment, a grown woman dressed like a cartoon character. And they followed her.

"Humans can't go in to that room, he has mind control power over humans, you two are safe" Alex explained. Not Human! Kai was narrowing down options, and what his counterpart could be, he suddenly started to wonder if he still had his magic. That question was quickly answered when upon entering the room a large drooling grey Alien lunged at them, it was 3 times the size of Kara with spikes and smelt horrid.

Kara flew at it, and it grabbed her like a rag doll around the neck, she passed out and it then threw her against a wall, it turned its attention to Kai.

"Seriously, I'm having a bad day, and you want what?" as the alien stared at him, "Are you trying your little mind control game on me? Good luck," he held out his hand and cast a spell bursting blood vessels in the creature's brain, keeping it at a distance from him. "That girl" He pointed to Kara who was in a heap on the floor, "She can fly, don't you think that's a little odd, well I guess not! Things have changed a lot, 18 years in a prison world alone, and people can fly, there are vampires, and you, no idea what you are" the creature had collapsed on the floor. He started to feel the creature trying to enter his mind. He chuckled "that's not a good move, I'm not a normal person or very nice, and I don't play well with others, so let's stop that" he started to walk around the fallen creature muttering a spell, "Now you won't be causing trouble in anyone's mind's, I have bound your power to control people, the advantage of being a witch, means others can't control you, could you imagine how dangerous it could be. Now what to do with you, I'm trying really hard not to kill people, see I am a sociopath, and normally feelings don't matter, and I now have some thanks to my brother, and it's very confusing. I don't like feeling so will just try to avoid it, can you understand me?" he looked at the Alien, "Let's give you the power to speak English" and cast a spell so the Alien could understand him, "does that work? I'm going to be honest with you now, I'm still a bit rusty with all these spells"

The Alien looked at him sadly "What is happening to me?" it croaked

"I just told you, I gave you the power to understand me, I may have said that before the spell, I forget, anyway, that girl," he pointed to Supergirl, "She is from this world, I'm not, she may know more, maybe next time ask rather than strangle, it limits the chance to ask questions" Kai was happiest when just chatting the poor creature was finding that out.

"Why can't I feel your mind?" it asked

"I told you, don't you listen, I bound your mind control power, it's not very nice, people don't seem to like it from what they tell me" he looked directly at the creature still holding it in place, "can you behave or not, I don't want to kill you, I clearly can, you hurt that girl, she won't mind, maybe she will, I'm not sure"

"I won't hurt you" It growled

"Good" Beamed Kai, releasing his spell that held the creature in place, Kara started to stir, so he went to help her up, the creature slumped against the wall, keeping as far from him as it could.

Kara opened her eyes, "Is it safe" she asked. Kai glanced at the scared creature, then smiling helped her up, she held onto his hand a little longer than needed, squeezing his hand "What happened?"

"We chatted" he beamed, "He decided to change his ways, doesn't want to control minds anymore"

Kara walked to the door to invite Alex in to take over, the DEO soldiers outside were all heavily armed, Kai smiled sweetly and winked at the creature "Play nice" as he followed Kara out.

In Mystic falls Mon-El woke on a floor in an Alley way, a bright light had surrounded him and his head hurt, once he opened his eyes he noticed everything was different, darker colder.

He made his way to his feet but collapsed again.

He next woke up in a hospital bed with a machine beeping next to him, it wasn't the DEO and he was slightly concerned, sitting up realising he was in a medical gown, and frantically looking for his clothes. A pretty blonde nurse was quickly at his bed side.

"Take it easy, you passed out, you need some time" she said, he smiled at her. "I need some details, what's your name?"

"Mon-El, I mean Mike Matthews" he stated

"His Name is Kai Parker" a harsh voice came from the door way they both looked at the woman who was speaking, she was about 40, dark hair, pretty but a face of thunder looking at the young Daxamite.

"It's not" Mon-El protested

"Go," Jo directed to the nurse, and turned back to Mon-El, "What are you up to Kai?"

"I'm not Kai" Mon-El nervously chuckled, "I don't know who Kai is, but I'm not him"

Jo walked closer to her perceived brother, and hissed "What is your game? You are leader of the coven, you killed our brother, what could you possibly want now?"

"Coven? I am not following you, I'm not who you think I am" his grey eyes flashed panic, not sure what was happening, "Look, I was walking along, flash of light, I woke up here, I need to get back to National City Kara is going to kill me, I'm late for training"

Jo looked at him closer, he looked like Kai, sounded like Kai, but his language pattern was different, his gestures, he had fear in his eyes, Kai never showed emotion.