Name: Firey, Gender: Male, Species: Fire, Personality: Dim-witted but kind-hearted. Description: Leafy's best friend. Often bickers with Coiny. He has a generally raspy voice and, being a fire species, has no problem entering fire or lava, actively stepping up when fire is needed. However, the problem is that he is fatally vulnerable to water; entering water or having it splashed on him is a guaranteed death sentence, and he even gets hurt by his own tears or sweat, making him incredibly fragile regarding anything water-related. His personality is generally dim-witted but kind, and he gets along reasonably well with most participants. He is also quite timid, getting terrified of heights or even small amounts of water.

Name: Leafy, Gender: Female, Species: Lemon Leaf, Personality: Has a bit of a dual-personality gimmick. Description: Firey's best friend. Fundamentally sociable, kind, and inclined to help others, but occasionally acts selfishly or commits misdeeds. Initially had a good image due to her kindness and care for other objects, but she shows an obsession with being perceived as "good." Also, being a leaf, she is heavily affected by the wind.

Name: Coiny, Gender: Male, Species: Copper Coin, Personality: Bright and occasionally kind, but quite rude most of the time. Description: Pin's best friend. Initially had a voice like a boy going through puberty, but now has a distinct male voice. He does not die even if he falls into lava, a trait shared by all metal characters. Despite being a coin, he rolls remarkably well like a wheel. He bickers with Firey a lot.

Name: Pin, Gender: Female, Species: Plastic Pushpin, Birthday: September 12, Personality: Used to be selfish but has become much kinder lately. Description: Coiny's best friend. She loves bell peppers. When she gets too nervous or scared, she sweats a green sap-like substance. She is good at baking cakes. She once suffered the trauma of having her limbs removed and even losing her face, leaving her in a near-death state. She even underwent the humiliation of being shrunk and was at risk of suffering for a very long time. (But now she has returned to her original size, regained her limbs, and survived.)