He is an orphan and now fugitive previously accompanying Arya Stark.
Hot Pie is an orphan living in King's Landing and working for a baker as an apprentice. He was born and grew up in the city.
Hot Pie and Lommy Greenhands are recruited to join the Night's Watch. They bully Arya Stark when she joins their group and demand she give up her sword, Needle. Hot Pie claims that he killed a boy once by kicking him to death. When Arya refuses and threatens to kill him like she has with other 'fat boys', he backpedals and bumps into Gendry, who scares him off.
Hot Pie is travelling north on the Kingsroad with Yoren’s recruits. Gold Cloaks from King's Landing come upon them looking for Gendry. Yoren intimidates them into leaving but they promise to return with more men. Later, Arya, Hot Pie and Lommy Greenhands wash cook pots in the stream while Gendry fills a pail with water. Lommy says that they should yield if the gold cloaks return, not wanting to be caught in a battle. Hot Pie claims that he is unafraid of battle and Arya questions his courage. Hot Pie claims to have seen lots of battles and Arya calls him a liar. Hot Pie insists that he saw a man stabbed in the neck outside a tavern in Flea Bottom. Lommy tells Hot Pie that two men fighting is not a battle. Hot Pie says that they had armor on. Arya questions the relevance of this and Hot Pie says that if the combatants wear armor, it is automatically a battle. Lommy refutes the assertion and Hot Pie wonders what a dyer's apprentice would know about battle. As Gendry returns to refill the pail, Arya tell Hot Pie that Gendry is an armorer's apprentice. She instructs Hot Pie to relay his definition of a battle to Gendry. Gendry asks who told Hot Pie that. Hot Pie claims that he heard it from a knight. Gendry asks how Hot Pie knew he was a knight and Hot Pie again cites armor as deciding the issue. Gendry explains that anyone can buy armor. Hot Pie asks how Gendry knows and Gendry reminds him that he sold armor.
The group is resting in a barn when they are roused to arms by Yoren and told they are being attacked. Hot Pie and Lommy arm themselves and Lommy picks up Gendry's helm before they rush outside. They are met by Ser Amory Lorch and a force of men loyal to House Lannister. Lorch points out the Gold Cloaks with him and says that they have come for Gendry, a royal bastard. Lorch orders Yoren and the recruits to drop their weapons. Yoren remains defiant and Lorch orders him shot. Yoren fights on but is eventually overwhelmed.
Seeing their leader killed, Gendry and many of the other recruits join the fight while Hot Pie hides in the bushes. The recruits are quickly defeated and the survivors are taken prisoner. Lorch orders the prisoners taken to Harrenhal. Hot Pie is found in the bushes and is quick to yield. Lommy calls for help from the ground, a crossbow bolt in his left leg. Polliver approaches and asks him if he can walk. Lommy says they will have to carry him. Polliver offers him a hand and then stabs him through the throat, killing him. He tells his companions that Lommy wanted to be carried, drawing a laugh. Lorch pushes over Yoren's corpse and demands that the survivors identify Gendry. Arya says that they have already killed him pointing out the bulls head helm lying next to Lommy.
Hot Pie, Gendry and Arya arrive at the ruined castle Harrenhal with a column of other Lannister prisoners. Gendry sees the decimated towers and asks what kind of fire can melt stone. Arya tells him that it was dragon fire and Hot Pie asks if there are dragons there. Gendry says that dragons are extinct and Hot Pie wonders what he can smell. Arya says that it is the smell of dead people. Polliver orders them to walk on into the midst of the ruin.
They are chained in a stockade with many other prisoners. They can hear the sounds of a man being tortured nearby. The screams end and an old woman says that the victim is dead. She is expressionless and reports in a monotone that her captors have tortured her sister, husband and now her son to death. Gendry realizes that they select a new victim each day. Arya asks if anyone survives the torture and the woman does not answer.
Hot Pie and the prisoners are awoken by Ser Amory Lorch and his men. Ser Gregor Clegane approaches the stockade. Hot Pie says that he is the one who chooses the prisoners and Arya recognizes him. Hot Pie stares at him as he approaches and Arya asks what he is doing. Hot Pie says that another prisoner told him that he always stares at the mountain and is never chosen. Hot Pie and his new friend stare at Gregor as he surveys the captives. Gregor selects the staring prisoner. Hot Pie wets himself in fear. The prisoner is strapped to a chair by Weasel as the Tickler questions him. He is asked about hidden valuable in his village and the whereabouts of the Brotherhood. A rat is placed in a bucket and strapped to his chest. Weasel heats the bucket to provoke the rat into burrowing through his chest. The Tickler asks who aided the Brotherhood and the prisoner implicates Ganes the butcher and his son. He begs them to stop and the Tickler says that he has been very helpful but continues with the torture regardless. Hot Pie and the other prisoners watch, helpless to stop them.
The head of the tortured prisoner is hammered onto a spike above the stockade. Gendry is chosen by Gregor and his questioning begins despite him not being from the village. Lord Tywin Lannister arrives and halts the torture. He orders the prisoners put to work and recognizes that Arya is a girl. Tywin says that she will be his new cup bearer. While working in the castle Hot Pie comes across the corpse of the Tickler, apparently having been murdered in broad daylight.
Hot Pie is talking to Gendry about recipes, when Arya comes by looking for Jaqen, but he doesn't know where Jaqen is. Lord Tywin leaves Harrenhal under Gregor's command. Arya arranges to escape with assistance from Jaqen H'ghar. Hot Pie steals food from the kitchens for their journey and goes along despite his fear. They are to walk out of the gate at midnight, but guards are posted there. It isn't until they begin walking to the gate that they realize that the guards are dead and nailed to their posts.
After escaping Harrenhal, they see Jaqen H'ghar standing on a small cliff above them, and Arya leaves the others to go to talk to him.
Hot Pie and Gendry criticize Arya for not asking Jaqen H'ghar to kill the contenders for the Iron Throne and ending the war. They are all captured by the Brotherhood without Banners. The Brotherhood takes them to the Inn at the Crossroads and feeds them, but before they can depart, Sandor "The Hound" Clegane is brought in as a prisoner, and in surprise, identifies Arya Stark.
As they get ready to leave, Hot Pie explains that he isn't going with them: he baked some bread for the innkeeper, and as he was a baker's apprentice when he lived in King's Landing, the innkeeper thought it was the best bread they'd ever had, and offered him a job. This life of fighting and travelling isn't really for him, plus Thoros formally made a deal with the inn to give them Hot Pie's services to pay for all of the meals the Brotherhood had there. He also points out that his brother is no king and he is no Stark of "Winterhell", earning a harsh correction of the name from Arya. Before they go, he gives Arya a present he made for her: a loaf of bread shaped like a direwolf, though Arya implies the tail looks like a head. Arya is a bit brusque but the three wish each other well as they depart, and as they are riding away Arya starts eating the wolf-bread, and turns back to shout to Hot Pie that it is very good
Brienne of Tarth and Podrick Payne stop at the inn to dine and Hot Pie serves them a kidney pie he made. Hot Pie tells them at length the process in finding the right ingredients for the kidney pie. He asks if Brienne is a knight as she is wearing armor, he then asks of Brienne's business. Hot Pie leaves after addressing the Starks as traitors.
As Brienne and Podrick prepare to leave the inn, Hot Pie approaches them and hands Brienne a loaf of bread shaped like a wolf and mentions that it is better than the last. He tells them he was with Arya travelling to the North to join the Night's Watch, before being captured by the Lannisters, and then being captured by the Brotherhood Without Banners. He explains that the last time he saw Arya was when the Brotherhood departed the inn, along with their prisoner The Hound, and that they intended to ransom her back to her family at Riverrun. Brienne and Podrick quickly (and correctly) deduce that because Arya's mother and brother were killed at the Red Wedding, anyone trying to ransom her would now head to her next closest surviving relative with money and power: her maternal aunt Lysa Arryn, ruler of the Vale. Leaving Hot Pie at the inn, they depart for the Eyrie.
He meets up with Arya when she arrives at the Inn, where he informs her of all the recent events in Westeros, notably the Destruction of the Great Sept of Baelor. However, he then notes upon the fact that House Bolton is defeated and Jon Snow is now King in the North. This changes Arya's travel plans, as she originally wanted to go south to defeat Cersei, but chooses her family over he lust for revenge. She then tries to pay Hot Pie, but he rejects it, saying that friends don't need to pay for the ale and the pie. She then remarks on his stupidity for not realising her femininity and that she is now pretty. Before she leaves, Arya tells her friend to not get killed.
A Night's Watch recruit from King's Landing, Hot Pie was taken prisoner by Lannister forces along with Arya Stark and Gendry. After Arya arranged for all three of them to escape Harrenhal, they fell in with the Brotherhood Without Banners. A skilled baker, Hot Pie opted to stay behind at the Inn at the Crossroads and practice his trade there.