We are speedruning the horrors with this one
So i re-watched the episode like... 3 times, and that's my theory/headcanon:
I think Assimilation and Andrew were specifically made to simulate Entity/Player interaction. Admins already research live players interact with entitys (like Collin`s world), and Andrew is probably some sort of "fake player" project to make this research easier. This why his AI is less advanced than Assimilations. Andrew need to be under a full control, to (maybe) perform different players playstyles, and Assimilation is need to mimic real entity, so they are more chaotic. Also maybe Andrew had more advanced AI, but after a first run (where he and Assimilation run away first time) they chopped it. SIDI can be what left of it, as they seem to be more chaotic in the chat, can use different sized text and sort of pictures, actively question admins acts and really happy, when they are gone from chat. And they are immediately take Assimilations side, when they notice they can see chat (i mean they did say they loved Assi) I have seen theory, that SIDI is actually the only living person in the chat, but i doubt that Admins would let people watch Andrews streams.
And actual headcanon: Andrew can be reprogramed to play in different styles, and Assimilation can be redone to simulate different entitys. Speedruner/Basic one eyed back scary blobe is just easier programs to master the simulation.
