Cylinder is a character created by Splapp-Me-Do and it is in the animation made by him called 'Cylindrical Adventures'. Jack first met him in question 39.  The options to the question are all animations made by Splapp-Me-Do.

The 4 answers you can pick from on Q.39 to say what the Cylinder is are: Cylindrical Adventures, Right here Right Now, Cough Drops, Space:Serious Buisness.

The Cylinders appereance is A White Cylindrical Shape with Yellow Eyes (Red Pupils), Two Legs and a weird Mouth.


His first appearance