The following information is from the Adventure Timecomic book series. It may not be part of the same canon or continuity as the animated series.
Agent Princess (also known as "Arsonist Princess") is a princess and a freelance vigilante who first appears in Adventure Time: Candy Capers Issue 4.
When Agent Princess lost all her money at the Casino Castle, she proclaimed that the casino was rigged to cheat and went undercover to stop them (when in fact the casino was completely legitimate). After she caused Bad Guy Magpie, the Casino Castle's owner, enough trouble, Peppermint Butler ended up getting restrained by her and put on a death trap under the belief he was Agent Princess in disguise. He was rescued by the real Agent Princess who reveals she rigged the casino explosives and destroys the casino.
Agen Princess' latest appearance was in Adventure Time Comics #6 when she is a contender for Ice King's true love contest with all of the princesses. In the end, it is revealed that the first night all of the other princesses escaped and the Ice King had been going out with Agent Princess the entire time.
Agent Princess, or 'Arsonist Princess', turned into a vigilante following a financial loss at Casino Castle. Convinced of foul play, she undertook an undercover operation to reveal the alleged cheating, leading to confrontations with Bad Guy Magpie, the casino's owner, and the restraint of Peppermint Butler.
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Who is the owner of the Casino Castle in the Agent Princess novel?
In the Agent Princess novel, Bad Guy Magpie owns the Casino Castle. She operates it as a lawful enterprise, but Agent Princess, suspecting foul play, disrupts its operations. Following these events, Bad Guy Magpie becomes a part of Peppermint Butler's business.
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What was the outcome of Agent Princess's confrontation with Peppermint Butler?
Peppermint Butler was mistakenly restrained by Agent Princess, who believed he was her in disguise. She placed him on a death trap but later rescued him, revealing her role in rigging the casino with explosives. Following the casino's destruction, Agent Princess reappeared as a demolitions expert during Peppermint Butler's Vault King's lair siege in Adventure Time: Candy Capers Issue 5.
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What was the real situation with the Casino Castle that Agent Princess misunderstood?
After losing her money at the Casino Castle, Agent Princess mistakenly thought it was rigged. She caused problems for the owner, Bad Guy Magpie, and set the casino to explode. However, the casino was legitimate, and her actions were a result of her own vigilantism, not a mission.
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How did Agent Princess lose all her money?
Agent Princess squandered her entire fortune gambling at the Casino Castle. Under the false belief that the casino was dishonestly rigged, she caused trouble for Bad Guy Magpie, the casino's proprietor. It was eventually established that the casino was, in fact, legitimate.
