C!Slimecicle

Yandere, protective, shy, kind, loving, protective, acts stupid but is really smart. Manipulative. Notices everything.

Charlie appears as a human with light skin, neon green eyes, and light brown hair. He wears a white shirt with three red lines on it (referencing "Yeah, I'm a Gamer" merch) and light blue pants. He has slime on his head and shoulder from his iconic Slimecicle character. He also wears a pair of glasses with eyes printed on them

At discovery, Slime was generally unaware of human social cues, and can come across as naïve as a result. It was difficult to take what he said seriously because of his generally playful and fun nature. He believed everything anyone told him unless they were contradictory to each other's statements. It was also mentioned that Slime didn't understand why humans did what they did for a time.

Slime also liked to refer to people in a specific way, saying their full name and often where they're from whenever he addresses someone (ex: Quackity from Las Nevadas, Fundy from L'Manberg). Rarely, he diverted from his usual naming, calling Foolish "Foolish Gamers from long ago" and Tommy "TommyInnit from nowhere in particular" / "TommyInnit from a bunch of places."

Slime also had a nihilistic side wherein he sometimes mentioned the death of the universe and the inevitable of death for everyone.[15][16]

When taking lessons from Quackity, he began to get quieter and more timid, showing a more introspective side and speaking calmly about the horrors he'd seen. By the end of it, his outward personality had almost changed entirely, leaving him more human-like and afraid, similar to Quackity On May 27, 2021, Quackity introduced Slime to Las Nevadas and tried to teach him concepts like self-defense, economics, and gambling. Quackity started the lesson by teaching Slime the definition of gambling and by telling him that gambling is only good for them if other people did it. However, the lesson was interrupted by a zombie, leading to Quackity giving Slime a diamond sword and teaching the concept of defense. After the short interruption, Quackity showed the slot machine in the casino and began teaching about basic economics by walking Slime through the process of officially purchasing the diamond sword.[23][24]

With Slime's basic understanding of economics, Quackity gave Slime diamonds to use on the slot machine. Slime lost in his first try, but won in his second bet, leading him to push the button again. Slime lost, and with the results of the three attempts, Quackity taught Slime about how the house always wins and how he would lose if he continued on the slot machine. Nonetheless, Slime became addicted and rolled the slot machine multiple more times, losing all his diamonds.[25][26]

Quackity then began teaching Slime about getting others to gamble. After a short interruption where Quackity taught Slime how to eat, Connor arrived. In accordance with his self-defense lesson, Slime began walking towards Connor with his sword in hand. Quackity quickly restrained Slime and began talking to Connor, also introducing Slime as his new assistant who would teach Connor about the slot machine. Slime then led Connor to the machine while attempting to converse and teach about the slot machine with Quackity's help. Connor gambled with complementary diamonds and won after a few tries, leading to Quackity teaching Slime how he can convince Connor to continue. Slime managed to force Connor to lose all diamonds, allowing Quackity to teach Slime about getting visitors in debt with the house. Quackity then offered Connor a loan. Slime also asked for one, and Quackity granted the both of them loans. Connor lost all of the loaned diamonds to the slot machine, putting him into debt with the casino. Slime attempted to give Connor a loan by giving six diamonds, but only asking for three as the loan price, leading to Connor paying off the loan with a net gain of three diamonds. Quackity then ushered Connor out to continue the lessons with Slime.[27][28]

After Connor left, Quackity explained that Slime was in debt to the casino from all the loans Quackity had given him. When Slime asked how one went about paying off a loan, Quackity gave Slime a job he could do for him to erase his debt - spy on a purple guy (Purpled) who, according to Quackity, tried the machine, got angry enough to attack him, and stormed out of the casino. Quackity then taught Slime about the ender chest and provided Slime with a bed in his home before leaving Slime to sleep.[29][30].

Quackity later made Slime his apprentice, with the intention of making Slime his successor when he died. Quackity gave Slime lessons on being human and told him that he'd never had a positive relationship last this long, and that he was special.[17]

When Purpled pushed Slime into lava, Quackity jumped in an attempt to save him from burning. Slime thanked Quackity for teaching him what it was like to be human, and died, reappearing in a dormant state. Quackity spends hours in his library researching on slimes in an attempt to awaken Slime and writes journals to help him remember things. He also named him Charlie, showing how much he truly cared for the slime.[13]

On September 10, 2022, Slimecicle was released from dormancy and trained to dislike Quackity by Purpled, Dream, and Punz.[47] Over time, Slime reflected on Quackity's lesson and realized that Quackity was a bad person who taught him the worst parts of each lesson. This led to Slime betraying Quackity at Las Nevadas and subsequently taking Quackity's second canon life.[54]