Carl and Frank Q are hostile crawlers whose conflict begins with a murder, expands into a vendetta over the death of Frank's daughter, and continues after Frank's death through the Ring of Divine Suffering. Carl first learns Frank's name from the body of a crawler Frank killed. When the two men meet, Frank tries to deceive and ambush Carl; when they meet again, he admits his responsibility for the choices that destroyed his family and gives Carl the magical ring that helped cause that destruction. They never reconcile. Frank intends the gift as revenge, while Carl accepts it as a weapon and spends the following floors resisting the kind of predatory power it offers.
Their relationship is defined by competing ideas of responsibility. Frank repeatedly presents violence as something forced upon him by parenthood, the dungeon, or other people. Carl recognizes that the dungeon deliberately pressures crawlers to turn on one another, but he refuses to treat that pressure as an excuse for Frank's murders. At the same time, Carl cannot dismiss Frank's grief as entirely false. Frank's description of parental failure later becomes one of the memories Carl uses to understand his own responsibility for Donut and the lasting damage caused by his father.
The evidence of Rebecca W
Carl knows Frank as a killer before he knows him as a person. On the First Floor, Carl and Princess Donut find the naked, stripped body of Rebecca W near the edge of the Hoarder neighborhood. Her crawler information identifies Frank Q as her killer, and Carl finds the gunshot wound that killed her. The discovery changes his understanding of the dungeon's human population. Until then, monsters and the environment are the obvious dangers; Rebecca's body proves that another crawler is deliberately hunting people and taking everything they carry.
Frank appears inside a safe room soon afterward. He is a level-eight human with three crawler-killer skulls, enchanted armor, a battle axe, throwing knives, and the bearing of a law-enforcement officer. Donut immediately identifies him as Rebecca's killer. Frank does not deny killing her, but he supplies a story meant to transform the murders into self-defense. He claims that he and a partner named Maggie were conducting an immigration-enforcement surveillance operation near Seattle when the Collapse occurred. According to his account, Rebecca led a human-trafficking operation, her group opened fire, and Frank killed three attackers after everyone entered the dungeon. He also says Maggie was shot and killed.
Carl lets Frank talk because this is the first living stranger he and Donut have encountered, but he notices inconsistencies. Rebecca had an apple core from a tutorial guild, contradicting Frank's claim that the firefight happened immediately after entry. Frank receives slightly less than the full experience value from a safe-room cookie, revealing that he is sharing experience with a living party member. Carl also sees him moving a finger to send chat messages. He silently warns Donut that someone else is present and creates an apparent opening by turning his back to try on looted clothing.
The deception ends when Maggie My emerges from concealment and fires at Carl while Frank shoots at Donut. Both attacks occur inside the safe room, where violence between crawlers is prohibited. The dungeon freezes Frank and Maggie before their bullets leave their weapons. Their visible records show eight crawler kills between them, and Maggie's presence disproves Frank's story about her death. Carl and Donut escape rather than retaliate. Carl does not want a player-killer skull, and he knows that killing even guilty crawlers would make future survivors less willing to trust him.
The rat-corpse trap
Donut argues that leaving Frank and Maggie alive gives them an opportunity to murder more people. Carl answers that problem indirectly. After Donut kills a dungeon rat, he places a smoke bomb, one lit stick of dynamite, and another dangerously unstable stick of dynamite in the corpse's inventory along with its ordinary loot. Frank had stripped Rebecca's corpse completely, so Carl expects him to inspect another apparently unlooted body. The trap lets Carl create a possible defense without remaining for a direct gunfight.
Carl initially receives no notice that the trap has worked. He and Donut therefore leave the area without knowing whether Frank and Maggie followed them, found the corpse, or survived. The uncertainty matters to Carl's later reaction: he designed the explosion for the two people who attacked him, but he did not know that their teenage daughter, Yvette, was hidden with Maggie inside the safe room. The trap reaches someone Carl did not know was present.
The truth is exposed when Carl and Donut appear on the Maestro's program. Frank and Maggie are brought onto the same show, and the production plays a recap of their First Floor journey. Their game guide, a Mind Horror, had urged Frank, Maggie, and Yvette to survive by killing other crawlers. The footage shows Frank and Maggie approaching Rebecca's group as apparent allies, ambushing them when their backs are turned, and shooting them. Frank pursues Rebecca when she escapes and corners her. Yvette refuses to participate even when Maggie gives her a gun and orders her to kill a wounded survivor for experience.
The recap also reveals the result of Carl's trap. After the safe-room attack, Yvette emerges from the concealed area where she had been hiding. Frank ignores Maggie's warning and loots the rat corpse. He pulls out the lit dynamite, but drops it too late. The explosion wounds all three family members, severs Frank's right hand, and leaves Yvette badly injured. Maggie then strangles Yvette while Frank lies nearby. Carl is horrified both by Maggie's act and by the discovery that his explosive caused Yvette's injuries.
Carl refuses the production's attempt to turn the tragedy into a simple feud. He acknowledges his role by apologizing for what happened to Yvette, but he tells Frank and Maggie that their daughter deserved better and that all of them could have become stronger by cooperating with other survivors. He blames their guide for encouraging murder without removing their own responsibility. Frank, visibly diminished and silent through most of the confrontation, avoids Carl's gaze. Maggie instead promises to hunt Carl and Donut. The Maestro strengthens that threat by giving the pair a legendary skill potion capable of greatly improving Find Crawler, a skill Frank already possesses.
The meeting in the Desperado Club
Carl encounters Frank again on the Iron Tangle in a Desperado Club. Frank has become a level-seventeen Night Elf Blood Assassin, has lost his right hand, and spends his time drinking and using blitz sticks. He is far behind the leading crawlers and has remained near the same station rather than trying to complete the floor. He tells Carl that he and Maggie separated after arguing about Carl and Donut. Other crawlers abandoned him after he told them the truth about his killings, and his crawler-killer skulls make new groups unwilling to trust him.
Frank says he has waited for Carl because he wants revenge, but his chosen method is not another physical attack. He gives Carl the Enchanted Night Wyrm's Ring of Divine Suffering, an item he received from a legendary box soon after entering the dungeon. The ring increases all of its wearer's attributes and grants Marked for Death. That skill allows the wearer to select a healthy crawler as a target and gain a permanent attribute increase when the target dies. In exchange, the wearer cannot heal while a living mark remains. Its rules become still more dangerous on floors where non-dungeon combatants can be marked or multiple marks can be active.
Frank describes the ring as a prize that ruined his family. He had refused an opportunity to sell it for a large sum, and he now expects its combination of immediate power and escalating rewards to corrupt Carl as well. Giving it away is therefore Frank's attempt to make Carl experience the same temptation and suffering rather than an act of forgiveness. Carl understands that the item is dangerous, but takes it because its power is real and because refusing such an advantage appears strategically foolish.
The transfer also supplies the missing explanation for Yvette's death. Frank admits that he and Maggie forced Yvette to wear the ring because she would not kill other crawlers and was not gaining levels. Before the safe-room ambush, they made her mark Carl. Once Carl's explosion wounded her, the active mark prevented her from healing until Carl died. Maggie killed Yvette rather than leave her in continuing pain. This explanation makes Yvette's death the direct consequence of several choices: Frank and Maggie forced the ring on her, selected Carl as her target, and initiated the attack; Carl set the trap that injured her; and Maggie chose to end her life.
Frank describes Yvette as unlike either parent and admits that she had run away in self-defense before the Collapse. He also confirms that he worked in customs enforcement, Maggie was a Seattle police detective, and they had been separated for five years. The family entered together only because Yvette had run away again and Maggie's deputy brother called them to retrieve her. Frank's truthful account does not change Carl's judgment of the murders. Carl feels no sympathy for Frank's actions, but he gains a clearer understanding of the fear, control, and parental failure behind them.
The conversation ends with Frank claiming that responsibility for a child becomes a crushing, unending burden when the parent fails. Carl rejects Frank's suggestion that only a biological parent can understand responsibility for another person, because Carl is already responsible for Donut. Even so, the words remain with him. Shortly afterward, Carl recalls them while deciding that he cannot allow Donut to join Hekla's group, and much later he connects Frank's warning about the shadow cast by parents to the damage inflicted by his own father.
Frank's death and Maggie's pursuit
Frank dies soon after giving Carl the ring. Carl first learns that Chris Andrews sat beside Frank at the Desperado Club bar, spoke with him, and then crushed his head before walking away. The killing appears inexplicable because Chris had previously protected other crawlers and had not behaved as a murderer. The later confrontation with Maggie establishes the missing cause. Maggie has become a Scree and is controlling Chris from inside his body; while using him, she says that she killed Frank. Frank's death is therefore part of Maggie's continued attempt to protect or avenge her family, not an independent decision by Chris.
Carl eventually frees Chris and kills Maggie, ending the active threat from Frank's family. Frank nevertheless remains present through the ring. Mordecai immediately recognizes it as an item that attracts hunters and can let a sufficiently ruthless combatant grow at an extreme rate. He orders Carl to remove it and warns that it was designed for powerful outsiders to farm other combatants, not for ordinary crawler survival. Carl agrees not to use its killing skill at that time, but keeps the ring rather than sell it.
The ring as Frank's legacy
On the Sixth Floor, Carl finally activates Marked for Death against the hunter Chin'Dua. The decision begins the progression Frank predicted: successful marks grant Carl permanent attributes, strengthen the ring's future rewards, and produce further system incentives. Carl uses the item against enemies on later floors, yet its central danger is not merely that a target may escape and prevent him from healing. Each use asks him to convert another person's death into personal growth, the same reasoning Frank and Maggie used when they tried to force Yvette to advance.
Frank's warning remains relevant on the Ninth Floor, where the ring can support many simultaneous marks. Carl repeatedly has opportunities to exploit captives, enemy armies, and vulnerable combatants for attributes. Donut's objections help pull him back when the item's logic begins to dominate his decisions. Carl also sees Li Na use another Ring of Divine Suffering on a vast scale, demonstrating how quickly its reward structure can turn overwhelming power into further compulsion.
Near the end of the Ninth Floor, Carl chooses to end the original ring's influence. He recognizes how many potential gains remain and knows that observers will condemn him for refusing them, but he also understands that survival cannot be measured only in attributes or bodies killed. He gives Frank's ring to Donut, who swallows it. The act closes the material connection between the two men: Frank's intended revenge fails not because the ring lacks power, but because Carl finally refuses to let that power determine what kind of survivor he will become.