Book and Ice Cube

This article focuses on the interactions between Book and Ice Cube. They appear to be good friends with each other given their status as Pencil's Alliance alternates.

Episodes suggesting a friendship

 * In Insectophobe's Nightmare 3, they both want to be in Pencil's Alliance, they were accepted, but as alternates. But they were disappointed to be alternates but they agreed.
 * In Get in the Van, they both go to FreeSmart's dance party (The Clubhouse of Awesomeness). Book asks Ice Cube if it's exciting. When Pin yells at Book because she think that Book is manipulating Ice Cube, Ice Cube takes all of her power to yell at Pin, explain the she wanted to go with Book, not Pin.
 * In The Long-lost Yoyle City, Book tells Ice Cube that they've reached the Yoyle Mountain summit.

Episode suggests a conflict
TBA

Trivia

 * In the FreeSmart Van and the FreeSmart Supervan, Book was sitting next to Ice Cube.