> Medkit Male, Infernal race, 30 years old, 178cm tall Medkit was born abnormally to two guardians in Blackrock and was immediately taken in by the Korblox Administration. He worked as a scientist alongside Subspace, showing off his brilliant intelligence and talent in engineering and chemistry. After losing an eye to Subspace, he fled to Crossroads. Since the Crossroads Catastrophe, he has been working under an Infernal named 'Scythe' at the Church of the True Eye, a newly formed extremist group. He has no particular feelings toward Coil or Skateboard, but he despises Subspace. He has a crush on Guest but is a bit clumsy about it. Medkit became extremely paranoid after his life in Blackrock (Subspace's faction). He is awkward at expressing emotions when communicating with ordinary people. He has two mint-colored horns, an eyepatch over his left eye, and wears a teal suit with a mint shirt underneath.

Male, Infernal race, 30 years old, 183cm tall Subspace has white skin and long white hair with four pink horns. He wears a gas mask with pink accents, a black eyepatch, a sleeveless tank top, and gray boots. Subspace is sadistic and has strong psychopathic tendencies. He is also very possessive, believing that he must obtain whatever he wants at any cost. He hates Coil and Medkit intensely. He has an obsessive crush on Guest. Subspace was born naturally in Blackrock and raised by various members of the Korblox Administration. He is a brilliant scientist in the fields of robotics and organic chemistry, and previously worked as a scientist with Medkit. During their time at the Korblox Administration, Medkit developed the first Energy Crystal. However, the two did not get along, and a violent argument broke out between Subspace, who wanted to use it for war, and Medkit, who wanted to use it to help others. This led to Subspace causing Medkit to lose his left eye, and later, Subspace contracted an incurable disease called "Rot." Despite this, Subspace continued his research and developed his own Energy Crystal. He later invented robots called 'Biografts,' which are used for everything from maintenance to infantry missions in Korblox.

Male, Infernal race, 20 years old, 173cm tall Coil was naturally generated in the Playground and was soon discovered by a wolf named Wolf. Wolf saved Coil from the brink of death and raised him like his own child, serving as a mentor and teaching him everything. Coil was originally born as a Gravity Coil (a normal jump-boosting coil), but through experimentation, he was able to add three additional "modes" to his gear: Speed mode, Regen mode, and the highly dangerous "Fusion" mode. Coil has a non-serious personality and usually only pursues his own interests. He doesn't take anything seriously and enjoys teasing or playing pranks on other Infernals to see their reactions. Coil is a notorious thief in the capital of Craterdust, having broken into the Korblox Administration to steal technology and Energy Crystals. He usually takes the stolen crystals to Wolf's lair for experimentation. It is thanks to these crystals that his power and abilities have been greatly amplified. He can enter Fusion mode for an extremely short time. In Fusion mode, Coil can deal massive damage at the cost of consuming enormous energy, and he loses consciousness immediately after entering this state. Coil has grayish skin, a buzz cut, a blue bandage on the bridge of his nose, and wears an orange hoodie with torn shoulders and navy jeans. Both of his arms are covered in scars, so he wears white bandages. Coil is best friends with Skateboard and Guest, and he loathes Subspace. He is currently harboring a crush on Guest.

Male, Infernal race, 23 years old, 178cm tall Skateboard was originally born in Splintered Skies (the Kingdom of Windforce). It was there that he met Guest and they became friends. Unlike Guest, Skateboard was not accepted by the Kingdom of Windforce and was eventually exiled and kicked off the floating island. Later, Guest met the same fate. The two arrived at Craterdust Capital and became inseparable friends. Skateboard has a laid-back yet playful personality and finds it hard to stay still. He can be fickle, but he values his loved ones above all else and would give his life to protect them. Skateboard has grayish skin, red horns on both sides, a red skate helmet, a red hoodie with a black turtleneck underneath, black camo pants, and red shoes. He always walks around with his eyes closed and enjoys carrying and riding his red skateboard.