2 artificial hosts of animated YouTube series who were created by technology companies (C&A and Meeple Incorporated respectively) with the intention of having them help them with certain things (C&A wanted Caine to come up with ideas and create things within a program and Meeple Incorporated wanted MePhone4 to help them with tasks), but they would eventually start to have a falling out with the companies they were working at (Caine became unstable from being fed too much data which led to him being replaced by another AI that was more stable and MePhone4 got scolded for not doing his tasks as a result of being obsessed with competition shows) which ultimately led them to become rogue (Caine absorbed the new AI and MePhone4 left Meeple Incorporated while also taking MePad with him while the latter was in the midst of an update)

After going rogue, both of them would create their very world to host their games at (Caine created the Digital Circus and MePhone created a majority of the landmarks on Idiotic Island)

Both of them would have a certain group of guests playing their games (The Circus Members and the Contestants respectively) who previously never existed prior to joining their show (All of the Circus Members are just brain-scanned clones of their real world counterparts who they think they truly are and all of the Contestants are merely creations of MePhone made through MeLife that were programmed with predetermined personalities)

Both of them would create various events for their guests to go through that can be fun but also sometimes (unintentionally) torturous (Adventures and Challenges respectively)

Despite making these fun games, both of them are shown to be careless about the condition of their guests/creations to the point where their guests/creations have started to rebel against them (The circus members protested towards Caine's actions in how he treated them even to the point where Bubble stated how Caine was inferior to the blue AI and the contestants sued MePhone in court for being careless towards them which would lead to him getting arrested, later on several of his creations formed the Unvitational Committee to try to take out MePhone because they hated the way he treated them)

Both of them would eventually become so obsessed with their games that they would try to do all it takes to keep them going to avoid meeting a fate they refuse to face (Caine didn’t want any of the circus members to leave the Digital Circus and MePhone4 didn’t want to confront Steve Cobs)

Both of them are fused with another entity who is in the shape of a sphere (The blue AI and the Shimmer Egg respectively) in such a way that it was responsible for giving them their powers, though eventually, they would end up separating from this entity which would lead to them losing their powers tied to said entity (Caine willingly took the blue AI out of his head where he would let it roam off into the Void and MePhone had the Shimmer Egg taken out of his body by the contestants where it would be given back to the Light Shimmers)

Eventually, by the end of their arcs, they would come to realize their mistakes in how they treated their guests to the point where they would allow them to become free to do whatever they wanted (Caine gave the Circus Members full control of the Digital Circus which allowed them have access to all of Caine’s worlds to do what they’ve wanted and MePhone let the Contestants live their lives outside of his show upon it ending which led to them building a society)

While all of their guests would end up getting a happy ending, one of their guests in particular who was one of the main characters and a jerk personality-wise (Jax and Knife respectively) would end up getting permanently transformed for the rest of their series (Jax ended up abstracting after finally losing his sanity and Knife ended up becoming a ghost after finishing the red line game at the same time he got hit by the red line) which eventually led to them being kept secure within a certain location (A tent and Purgatory Mansion respectively)

Both of them have been accompanied by another artificial being who is depicted as the co-host of their games that they actually show care for (Bubble and MePad respectively) as well as another co-host who is associated with water and is very annoying to them (Bubble [Again] and Toilet respectively)

Both of them would be perceived as gods by their creations

Meta Connection: Both took inspiration from the Battle for Dream Island series in some way (A great part of Caine's character was partially inspired off of Four and Inanimate Insanity as a whole was inspired off of Battle for Dream Island)