The Kunlun Mountains are a mountain range in Western China. It is one of the highest in Asia, forming the northern edge of the Tibetan Plateau. The Kunlun mountains appears in Sly Cooper and the Thievius Raccoonus and Sly 3: Honor Among Thieves.
Sly Cooper and the Thievius RaccoonusDuring the events of Sly Cooper and the Thievius Raccoonus, the Panda King established a massive stronghold in the Kunlun Mountains, which he used to produce explosives and run his extortion business. If the small villages he "protected" didn't pay him, he would destroy them with his powerful fireworks, by creating avalanches that would burry the villages in snow. Sly Cooper traveled to the Kunlun Mountains to face the Panda King and retrieve the fourth part of the Thievius Raccoonus. Once he managed to infiltrate the stronghold, he confronted the Panda King. The two battled, and Sly emerged victorious. The stronghold was abandoned and the innocent villagers enjoyed some time of peace. That is, until General Tsao arrived.
Sly 3: Honor Among Thieves
The Panda King meditated there as a monk after he was brutally beaten by Sly Cooper and his daughter Jing King was kidnapped by General Tsao. The Cooper Gang (consisting of Sly, Bentley, Murray, the Guru, and Penelope) needed a demolitions expert. They had seen the magnificent fiery art of the Panda King in Sly's earlier fight with him. Even though the Panda King was a huge factor in Sly's Father's death when he worked with the Fiendish Five, the Cooper Gang forgave him. Panda King said he would only join if Jing King was saved. General Tsao was forcing her to marry him somewhere in the Kunlun Mountains. They went to Tsao's fortress where he was using panda monks, guard tigers, and karate monkeys as his infantry protecting his wedding citadel and his treasury. Bentley and Sly went undercover as Tsao's wedding assistants. Bentley was the wedding planner and Sly was the photographer. Murray and Penelope had worked together to find a chunk of ice resting in a Himalayan bay. The ice was actually the Cooper Van, just frozen. This was a major discovery, the reason being that the only time they had seen the Cooper Van before was in Sly 2: Band of Thieves, where it was floating on a piece of ice.