Cheeky & Bun-Bun

Miss Cheeky & Mr. Bun-Bun are both a slightly modified version of the standard Mister Handy robot. They are the first kind of robot you encounter, and are the second most aggressive kind you'll have to face. Cheeky is the yellow one, and Bun-Bun is the purple one. They are first encountered on Night 1.

Behavior
Like almost any other robot, they are both programmed to start chasing you as soon as they see you. If they lose sight of you, they will return to the most recent spot on their patrol path.

When they aren't chasing you, they both tread a strictly defined path, constantly traversing the place in counterclockwise circles. Their patrol routes, when combined, cover the entirety of the Arena. This means that you cannot stop anywhere for too long, because sooner or later, one of them is going to pass through that spot.

If they manage to get close to you while chasing you, your collar will explode. They are the only robots capable of making that happen (at least when the Ghost Challenge isn't on).

Sounds
When idle, they both play music box melodies. The melodies are following:
 * Cheeky: "Someday My Prince Will Come".

If they spot you, they will play a distinct cavalry charge tune instead.
 * Bun-Bun: "Silent Night".

Suggested tactics

 * The doors are your friend here. Like all robots, Cheeky & Bun-Bun will immediately cease their chase if they get near a closed door. In addition, they will stop chasing you if they lose sight of you for more than a few seconds.
 * Like all robots, they cannot detect you if you're standing behind them. This allows you to sneak (or run) past them in certain situations, if you're careful enough. A good idea is to memorize their patrol paths and follow one of them from behind.
 * If you shut a door that Cheeky or Bun-Bun intends to go through next, then their response will be to simply move to a different spot on their path and continue from there. Can be useful if you need to make them go away.