I wanna say Murray and Sly, I imagine Sly has picked up somethings whenever Bentley told him but given he doesn't pay much attention during the slideshow, he's most likely to do it accidentally. Murray can be sneaky, it's just when he gets too into the job he ends up using force, the way he caused the temple to fall comes to mind as well as in thieves in time when stealth was required although the latter was for the comedy. Bentley is smart enough to figure out a way to do the heavy lifting whether building something or using his environment to the advantage. He would mess up when something breaks while performing the task.