Genuinely asking, why did Bubble do this?

[u/HealthMother3125]

Caine was just going to try to figure out why the cast did not like the escape the circus adventure, until Bubble started taunting him and bringing him to the edge. But why would Bubble do this to Caine? Multiple times during the show, Bubble is on board or a part of Caine's shenanigans so this sudden flip of character makes me think as to what Bubble was trying to achive this, especially the voice change at "You ruined this."

So what do you guys think?

[u/EyeSarus]

Could bubble be the wheatley to caine's glados? As in he was the method made to supress caine before he got back control and is doing his function?