Algodoo

RULER! becuase when they slipped in episode 5 ruler was the only one tall enough to reach soap, and in the top right corner, ruler was secrletly smiling as well as banana! If you don't believe me, watch the episode.

I Know I Suspect Ruler And Banana You Know What Happened With Taco Right..

OMG

Flower I am 80% sure 5% ruler 5% burger 5%Banana 5% glue

Also The episode had a trailer and is going to reveal traitor I think it is Flower because She is ahem in an a alliance with trophy who is the sherlock holmes of the traitor also I've watched so many object shows I feel what they would do And my instincts said flower and I am following them

GlueStick or Burger

But it could be burger since at the end of episode 4 the traitor made a cameo and it looked to be a round object yet glue hesitated a bit in episode 5 Also ruler is very tall so he could pick soap off of hearty
And banana is insane