This article lists the interactions between Snowball and the duo Pen and Eraser. Snowball was very close to both Pen and Eraser in BFDI, though not as close as Blocky. In TPOT, however, Eraser, Pen and Snowball had several conflicts during competitions, but seem to be on better terms after the team swap, at least on Eraser's side.
See Eraser and Pen for interactions that don't involve Snowball.
In "What's Up Bell's String?", After Eraser and Snowball are swapped on the same team, them and Grassy refer to each other as "bros". Eraser then subtly smiles when Snowball suggests that they throw Ice Cube down their pit.
Neutral interactions[]
In "Yeah, Who? I Wanna Know", Pen tells Snowball, Blocky, and Eraser to look at the BFDIA results.
Episodes suggesting a conflict[]
In "Bridge Crossing", when Snowball disconnects the second bridge, Eraser says, "Seriously".
In "Lofty", Eraser gets angry at Snowball after he pops Pencil's balloon, asking him, "What was that for?!". Snowball says he popped it because the balloon was pink and pink is too girly. Eraser disagrees, saying pink is quite manly.
In "The Worst Day of Black Hole's Life", Eraser knocks down Snowball's stack of blocks, causing him to face plant onto the ground. He smugly remarks "What are you gonna do about it?" to Bell, knowing his team can't do anything to hurt or stop him. He knocks over his stack again, and stands triumphantly on the podium.
In "Balancing P.A.C.T.", Snowball, along with Grassy, protects Teardrop from Eraser and the rest of his team. Pen fights Snowball while trying to get to Teardrop. Eraser tries to reason with him, he tells him he'll have to go through him and Grassy to get to her. After performing a risky move with the help of Tennis Ball, they both manage to get him off the balance beam.
