As the 'Great Mushroom War' went on, a young girl, by the name of Marceline tried to occupy her time, she had noone to talk to, only herself, she tried making companions, she would use whatever she'd find. Then came a strong winter, she needed someone to cuddle, someone to know she'd make it through this, so she made another companion with the most common resource around, Snow.
She made it, she never named it but she felt a safe presence around it, eventually she started to believe that this snowman was a true person, then why wouldn't it talk back, she'd commonly ask herself, one day she finally thought up an idea, if it was a living being it'd have to be treated like one, taught how to talk, she made this theory up so she could feel more safe around her snow friend if he was a living being.
She started to teach it the basics, how to make sounds with its mouth, how to crawl, and how to walk, it never did any of these actions but she believed and never gave up, then came summer, as the sun rose the snowman sunk, all the way until its last flake melted, Marceline became depressed, but she went through this, she never remembered her snowy friend, the next winters passed normally, until one winter, when the Great Mushroom War ended, the snow began to rise, it started to rebuild itself until it was a great snow golem, it had one goal in mind, find Marceline.
It roamed the destroyed land, meeting many a friend and foe, it had strange feelings about this weird creature that resembled Marceline and a shapeshifting dog that followed it along. It had mixed feelings, fear and friendship, friendship that it had never felt before, it tried to talk to them but all that it knew was how to babble like an infant, so it seemed to roam alone.
He then stumbled upon a small creature, it woofed, he became friends with it quickly and took care of it, he never felt this sense of friendship after Marceline abandoned him, many a day passed until one day he returned this creature to its owners. It felt immense sadness but also befriended many creatures.
The weird creature and his shapeshifting dog made snow golem a friend, she was made out of Cloud Kingdom pieces and risen to life by the Party God, they lived together, a perfect match, but day after day he still wonders what happened to Marceline, and why she left him, maybe one day she'd come back for him, or maybe she didn't recognize him. He never really ventured outside of the ice kingdom after that.
Until one day...