This article lists the interactions between Book and Nickel.
Book and Nickel are shown to be friends. Although they never seem to intentionally prioritize each other, they tend to protect and defend one another and make small conversations.
Episodes suggesting a friendship[]
In "Well Rested", Nickel attempts to prank Book by making it look like he has arms, but Book can tell that they're Bomby's arms. She's still delighted by their prank and calls him silly.
In "Gardening Zero", Nickel tries to get Book, Cake, and Pillow to stop playing Yoyle Chess so that they can focus on their plant. Pillow tells him that babysitting a plant isn't fun, but Book tells her that Nickel is right, and Nickel thanks her.
In "The Great Goikian Bake-Off", when the team is playing their game, Book presents Nickel as their thief. Later, when the singing voice tells Just Not to climb the mountain, Book and Nickel look at each other and Book says they may as well do what it says. Later, Nickel tells Book to let him use her Goiky Map.
In "Balancing P.A.C.T.", Nickel convinces Book to celebrate Rocky's elimination, later on Nickel asks Book for strategies during the contest.
In "Outbreak At Stake", Nickel tells Book that the stress of the apocalypse is too much for him and suggest that they could sleep through it. Book looks shocked when Pillow brutally kills him.
Neutral interactions[]
In "It's a Monster", Book appears to be concerned for Nickel when Match steps on him. Book thinks Nickel might be right about their break time being too long, but is told otherwise by Match. When they are done cranking, Nickel states to Book that he'll take his chances with the HPHPRCC exploding.
In "Fishes and Dishes", Book tells Pillow to take care of Puffball in response to seeing Nickel get attacked by her.
In "The Seven Wonders of Goiky", Nickel wants to take the pogo stick from The S! Books says that looks like fun, but that they should instead take the glass panel.
Gallery[]
Book notices the real Nickel with "arms"
...and Book notices that it was Bomby's arms.
all of a sudden, firey speaker box interrupts the conversation
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