Pen is a male anthropomorphic pen who is cool, yet nice. He is considered one of the "cool" characters and is good friends with Eraser, Blocky, and Snowball. However, unlike them, Pen is more optimistic and sensible and has his nicer moments more often than them (For example, when Firey allows Pen and his three friends into Dream Island, Pen is the only one who thanks him). Pen tends to be nicer than his friends, as two of them (Blocky and Snowball) have been shown to enjoy murdering other contestants, while the other one (Eraser) seemingly does not care much about other people.