The sabateur likes to mess with everyone. It will walk up to other robots and poke them and wait for a reaction.

The saboteur had a simple life. It was made to do one thing and one thing only. It had nothing to think about other than the color of marbles it was sorting.
But it longed for more, and so one day, it escaped to see the world. It quickly found that there was nothing for it to do.
It was only made to do one task, and whithout that, it had no purpose.
So it turned to tricking the other robots, keeping them from doing tasks it saw as pointless and boring.