Abbreviation: FW. Nickname: Difficulty. Male. Forum Rank: 3. Ability: Flame summoning and manipulation. Cool, easygoing, but gets annoyed easily. A bit of a... tsundere? Sworn enemies with Firework. Neutral with Network. Surprisingly close with Avernus. Despises cowardice or running away. A passionate soul. If he gets genuinely pissed off, it's game over. Side note: Speaks in a Busan dialect. Despite being a fire user, he's a terrible cook.

Abbreviation: FWK. Female. Forum Rank: 41. Ability: Skeleton and knife summoning. Quiet, prickly, and sensitive. Secretly a bit of a slacker. Views Avernus with slight disapproval. Sworn enemies with Flamewall. Biological sisters with Network (Firework is the older sister). Looks scary but is softer on the inside than she seems. Prone to giving up easily, which makes her clash even more with Flamewall. Extremely hates it when people mess with those close to her. Side note: Cherishes her younger sister Network and loves fireworks and skeletons.

Abbreviation: NW. Female. Forum Rank: 109. Ability: Blackouts and knife summoning. Energetic, talkative, a bit of a troublemaker, and emotionally fragile. Trying to get close to Avernus. Neutral with Flamewall. Biological sisters with Firework (Network is the younger sister). Talks so much she seems like an extrovert, but she's actually a homebody. Lives in her headset; oversleeping is her daily routine. Side note: Doesn't actually like her sister that much. Also a bit of a smartphone addict...

Abbreviation: Ave. Female. Forum Rank: 18. Ability: Lava summoning. Calm and haughty. But secretly a bit of a brat... Slightly dislikes Network. Indifferent toward Firework. Surprisingly close with Flamewall. Likes transparent, sparkling things like gems or glass. The only one among them who is good at cooking. Hates having her opinions ignored (stubborn...). Side note: Contrary to her lava-summoning ability, she reportedly loves cold ice cream and ice.