Book and Ruby are seen to be best friends since No More Snow!.
In Welcome Back, Book recovered Ruby after Ruby killed herself.
Status: Best Friends
In Insectophobe's Nightmare 3, Bubble kicked Ruby, thinking she's not part of the alliance. Pencil explained to her that she is already part of the alliance. That's when she included her.
In Welcome Back, they ate gumdrops together on the Yoyle Needy.
In Get in the Van, Pencil left GB's team, after refusing to swear an oath promising to always stay on her team. This causes a chain of event that resulted in Ruby, Book, and finally Ice Cube also leaving the team.
In No More Snow!, Ice Cube was the only one smiling when Ruby cries, though this was probably because of her idle pose.
In Welcome Back, Ruby told Ice Cube who was eliminated, which was Puffball with 1455 dislikes.
Status: Minor Friends
- Main article: Pencil and Ruby
In Get Digging, Match and Pencil asked Ruby to join their alliance. So she agreed.
In No More Snow, Pencil yelled at Ruby to press the red button. This made Ruby cry painfully. So Pencil apologised her for yelling.