Caitlin stood in the corner silently watching from the window the snow she had recently created fall. She knew it was a time of celebration and of joy but she was still uneasy using her powers was risky regardless if it was appropriate because of the occasion.

'Mind if we join you?' she heard a voice say turning back Caitlin saw an auburn-haired woman and a tall dark-skinned man approach her.

'Uh no not at all, by all means.' Caitlin offered as the two new comers came around her to admire the snowfall.

'It is beautiful, isn't it?' the man spoke after a moment of silence.

'Uh huh.' Was Caitlin's reply.

'Yeah on our Earth we're lucky to get any snowfall in December at all.' The woman said in turn.

'You 're Kara's friends, right?' Caitlin guessed as she turned to face them she knew Kara would be coming over with company after Barry invited her and this was the first the ice powered metahuman had any interactions with them since they arrived.

'Caitlin Snow' she introduced as she offered her hand to which the auburn-haired woman promptly shook.

'That's ironic,' The woman joked. 'I'm Alex, I'm actually Kara's sister.'

'Oh, so you're an alien too?' Caitlin inquired.

'No, my family adopted Kara when she was young so I'm a hundred percent human.' Alex awkwardly replied as she pointed to her companion. 'He however is an alien.'

'J'onn J'onzz.' The man introduced as he and Caitlin shook hands.

'You from Krypton too?' Caitlin asked curiously.

'Mars actually.' J'onn corrected as he pulled his hand back and took a sip from his glass of eggnog.

'Really?' Caitlin asked skeptically.

'Yes why?' J'onn asked confused.

'It's nothing I was just expecting someone…' Caitlin said trying to find the proper words.

'Little and green?' Alex guessed as she was sure that was what Caitlin's ideal of what a Martian should look like.

'Well yeah.' Caitlin admitted.

'Well you're half right, J'onn is actually over eight feet tall.' Alex revealed as Caitlin's eyes widen in shock and awe.

'Then how…' Caitlin began only for J'onn to quickly explain it to her.

'…I can shapeshift, the form you see is how I interact among people.' J'onn said

'Ah I see.' Caitlin nodded in understanding the message. 'Can I ask you a question Mr. J'onzz?'

Caitlin insisted as she was curious to the alien. Metahumans were one thing given their physical structure was originally human before it was altered in someway by the particle accelerator. And even after meeting Kara and dealing with the Dominators, aliens were still something beyond understanding as the bio structure they had was natural to their native race.

'Only if you call me J'onn, Ms. Snow.' The supposed Martian smiled.

'Then you'll have to call me Caitlin.' She retorted. 'Any way I wanted to ask how is your body able to reconfigure into the shape of your choosing? Dose it come naturally or do you just will it and presto you look like David Bowie if you wanted too?'

'Well…' J'onn began to explain in a way that someone like Caitlin would understand 'Think of the way a chameleon changes its colours…'

'So, your cells rearrange form into how you choose depending on your mood?' Caitlin asked.

'Well it's a little more complicated than that,' Alex intervened 'A Martian's physiological makeup is more complex and so changes aren't limited to just color scheme.' Caitlin shot Alex a look that was one part impressed and one part understanding.

'What was your field of study?' Caitlin asked knowingly as the way Alex explained it to her was the way someone with a scientific background would answer the way she herself would answer.

'Bioengineering.' Alex answered 'It helps identify what makes alien physiology tick when working for a government agency to protect the planet from aliens.'

'No way! Same with me,' Caitlin exclaimed in turn 'Only in my case it's with metahumans.'

The two women laughed before turning back to the man who no doubt was taken aback by their bickering.

'Oh sorry, J'onn.' Caitlin apologized for excluding the Martian from their conversation.

'Its quite alright,' J'onn sympathetically said 'To answer your question with concentration and training the shapeshifting can come at will. Though the emotional connection is true, there was a time my youngest daughter got so happy and turned orange for three days.'

'Really?' Caitlin questioned in awe 'Can all Martians do that?'

'They did indeed.' J'onn said proudly yet with a tone of what Caitlin assumed was sadness.

'Did?' Caitlin asked wondering why her question seemed to upset J'onn out.

'I'm the last,' J'onn said regretfully 'On my Earth anyway.'

'Oh…' Caitlin realized her question no doubt dredged up memories of whatever tragedy must have befallen his people to leave J'onn the last of his kind. 'I'm so sorry I didn't mean to…'

'It's fine,' J'onn insisted as he took another sip of his eggnog another moment of awkward silence passed before Alex spoke up to change the subject.

'So, how'd you get started, in the medical field?'

'I guess I wanted to follow in my mother's footsteps.' Caitlin answered.

'Same!' Alex retorted 'Both my parents were scientists that excelled in bioengineering and physics, in fact it was because of them Kara's cousin chose us to watch over her.'

'You must have looked up to them.' Caitlin guessed from the tone of Alex's voice had nothing but pride and admiration. 'My mom was…is…hard to please so I took a profession in her field as a way for her to be proud of me.' Caitlin struggled to admit before she looked back out the window to the snowfall.

'I don't mean to sound intrusive, but you seem troubled.' J'onn mentioned sympathetically.

'Did I say something wrong?' Alex asked as the look on Caitlin's face was exactly like J'onn's from a brief moment ago.

'No…no not at all.' Caitlin explained. 'Its just…lately I've been, how shall we say…struggling with coming to terms with who I am and despite the damage it did it actually brought my mom and I closer.' Alex and J'onn shot soulful looks to one another before turning back to their new friend.

'You know strangely enough, I had to come to terms with something about who I was too.' Alex said understandingly. After another brief pause of silence J'onn placed his glass on the windowsill.

'Caitlin with your permission I would like to try something.' he said

'What is it?' Caitlin asked

'I would like to try something known as bonding between you and Alex.' The Martian answered as he offered a hand each to both woman.

'I though we already were bonding, you guys told me a lot about yourselves already.' Caitlin asked confused.

'He means the Martian way of bonding.' Alex explained to which J'onn nodded in response.

'Back on Mars my people used our telepathic abilities to exchange a sort of mental link with one another.' J'onn explained. 'Its how we communicated. When two Martians bonded we shared thoughts, emotions, memories with one another.'

'So…its like walking a mile in another's shoes minus the shoes and walking?' Caitlin surmised

'Yes,' J'onn said 'But it was most effective when two were alike in terms of personality and experiences, and you and Alex are most certainly cut from the same cloth. I can use my abilities to act as a sort of conduit to do it with you both but only if you're both up to it.'

'What do you mean?' Caitlin wondered.

'It's against customs to intrude on another's mind unless I have their consent.' J'onn answered.

Caitlin was in awe not only could J'onn change form but he was also a literal mind reader. Caitlin was hesitant at first having an alien probing through her thoughts but he was a friend of Kara's and she also enjoyed his and Alex's company so she figured why not. Especially since they seemed to understand each other. Placing her glass on a nearby table she put her hand in J'onn's, Alex did the same with his other hand J'onn lowered his head for a moment then when raised it up his eyes glowed a bright red.

'Know each other.' Caitlin heard it was J'onn's voice but his mouth did not move and it seemed to come from everywhere a bright flash of light filled her vision but the shock of that was nothing compared to what followed.