TADC Episode 8 Intro (aka the story of 2 AIs)
The visual representation of Caineās origins and also linking back to the origins of the red/blue symbolism that perpetuated this show:
AI 1 (Caine) was made and fed information about the outside world, allowing it to generate and create things in the program.
Kinger later in this episode: āCaine was our first semi-successful attempt at that [ā¦] Caine was a little rough around the edges though, I wasnāt quite at Scratchās level of thinking outside the box, but it was good groundwork for something the rest of the team could wrap their heads around.ā
Caine was a first attempt, but not perfect. Science is a lot of trial and error and Caine showed Kinger what worked/didnāt work, which they could apply to future attempts.
So Caine either was put to the side, or was restricted by his own coding (what Kinger hadnāt figured out yet), with the box here representing either imprisonment by the developers, or imprisonment by his own restrictions in code.
AI 2 was made, this time presumably with the rest of the team building on Caine. There was the same process of development and whatnot, and this AI may have been seen as the āsuperiorā version, something Caine in the internalized based on Bubbleās later line about him being the worser of the two.
Caine was able to escape the limits in place, possibly advancing on his own in the time away, and ended up connecting with AI 2. They merged and their competing minds fought for dominance, Caine eventually winning out (maybe because even though AI 2 had a superior base code, Caine had longer to develop/grow.)
Then Caine made the circus.
The red/blue stuff, especially Caineās eyes, are possibly a side effect of the two AIs merging. And we see the red/blue when heās upset and feeling inferior/not enough (possibly the feeling that resulting in AI 2ās death to begin with), and maybe Caineās instability is a result of the other AI being consumed.
When we see the two AI near, we can see the difference in scale, showing again that idea that Caine was seen as a first draft/inferior AI.
Kinger says in Untitled that blue is his favorite color, it being closer to black, which could be a throw away line, or COULD be a nod at the idea that AI 2 was favored over Caine.
Additionally, the red/blue buttons: red is the option for āstayā (the āwinā option and what Caine wanted.)
All the usage of red and blue in the circus (outside of them being primary and common colors) could be Caine internalizing his past.
And his name: assuming C&A didnāt GIVE it to him, itās possible he chose it himself, as a nod to the fact he killed his sibling who was favored by the āmakers.ā