Question: Rusizi National Park is home to what animal holding a nearly-mythical status as a man killer in the region? 

Context paragraphs:
Van Vihar National Park: Van Vihar National Park is a national park in central India.  It is located in Bhopal, the capital city of Madhya Pradesh.  Declared a national park in 1983, it covers an area of about 4.45 km.  Although it has the status of a national park, Van Vihar is developed and managed as a modern zoological park, following the guidelines of the Central Zoo Authority.  The animals are kept in their near natural habitat.  Most of the animals are either orphaned brought from various parts of the state or those, which are exchanged from other zoos.  No animal is deliberately captured from the forest.  Van Vihar is unique because it allows easy access to the visitors through a road passing through the park, security of animals assured from poachers by building trenches and walls, chain-link fence and by providing natural habitat to the animals.

Mont Sângbé National Park: Mont Sângbé National Park (also spelled Mount Sangbé National Park, Sangbe Mountain National Park) is a national park in Ivory Coast.  The "Encyclopædia Britannica" lists it among the "principal national parks of the world".  It acquired national park status in 1976.

Malaan National Park: Malaan National Park is a national park in the Tablelands Region of Far North Queensland, Australia.  The park occupies the western third of Beatrice and the eastern fringe of Ravenshoe on the Atherton Tableland.  It belongs to the Wet Tropics of Queensland bioregion.  The park was established to protect significant animal and plant communities.  The areas were previously known as Dirran State Forest.  It is adjacent to Tully Gorge National Park and Mount Fisher Forest Reserve.

Gustave (crocodile): Gustave is a large male Nile crocodile from Burundi.  He is notorious for being a man-eater, and is rumored to have killed as many as 300 people from the banks of the Ruzizi River and the northern shores of Lake Tanganyika.  Though the actual number is difficult to verify, he has obtained near-mythical status and is greatly feared by people in the region.

Bandai-Asahi National Park: Bandai-Asahi National Park (磐梯朝日国立公園 , Bandai Asahi Kokuritsu Kōen ) is a national park in the Tohoku region, Honshū, Japan.  The park site straddles over Fukushima Prefecture, Yamagata Prefecture, and Niigata Prefecture.  The park was designated as a national park on September 5, 1950.  The park encompasses 186,404 ha of land (the third largest national park in Japan), consisting of three independent units: the Dewasanzan-asahi Region, Iide Region, and Bandaiazuma-Inawashiro Region.

Establishment of Grand Teton National Park: The establishment of Grand Teton National Park took place over a period spanning more than 50 years.  Located in the northwestern region of the U.S. state of Wyoming, Grand Teton National Park is 10 mi south of Yellowstone National Park which was established in 1872, when Wyoming, Idaho and Montana were still territories and the region was very sparsely settled.  By the late 19th century, conservationists were working to provide further protection to surrounding regions, leading President Grover Cleveland to create the Teton Forest Reserve, which included a portion of northern Jackson Hole.  By 1902, the reserve had been combined into the Yellowstone Forest Reserve, then was divided again in 1908 by President Theodore Roosevelt, establishing the Teton National Forest, which protected most of the Teton Range.  By 1907, the U.S. Bureau of Reclamation had constructed a temporary dam at the Snake River outlet of Jackson Lake.  This dam failed in 1910 and a new concrete Jackson Lake Dam replaced it by 1911.  The dam was further enlarged in 1916, raising lake waters 39 ft as part of the Minidoka Project, designed to provide irrigation for agriculture in the state of Idaho.  Though efforts to protect the Teton Range and Jackson Hole as part of an expanded Yellowstone National Park dated back to the late 19th century, proposals to construct more dams on some of the other lakes in Jackson Hole led Yellowstone National Park superintendent Horace Albright to block such efforts.  Albright was originally an advocate of the expanded Yellowstone plan which was very unpopular with local residents.  By the mid-1920s local sentiment had changed as a result of proposals for a new national park including only the Teton Range and six lakes at the base of the range.  With the general agreement of prominent Jackson Hole residents to this plan, President Calvin Coolidge signed the executive order establishing the 96000 acre Grand Teton National Park on February 26, 1929.

Rusizi National Park: Rusizi Nature Reserve is a nature reserve in Burundi, next to the Rusizi River.  It is 15 km north of the city of Bujumbura and home to hippopotamuses and sitatungas. Gustave, a Nile crocodile rumored to have killed 300 people lives here.

Koko River, Rusizi District: The Koko River is a river in the Rusizi District of southwestern Rwanda that is a right-hand tributary of the Ruhwa River, which forms the boundary between the western regions of Rwanda and Burundi.  For most of its length it runs through the Nyungwe National Park.

Chūbu-Sangaku National Park: Chūbu-Sangaku National Park (中部山岳国立公園 , Chūbu Sangaku Kokuritsu Kōen ) is a national park in the Chūbu region of Japan.  It was established around the Hida Mountains and encompasses parts of Nagano, Gifu, Toyama and Niigata prefectures.  It was designated a national park on December 4, 1934, along with Daisetsuzan National Park, Akan National Park, Nikkō National Park, and Aso Kujū National Park.

Hemis National Park: Hemis National Park (or Hemis High Altitude National Park) is a high altitude national park in the eastern Ladakh region of the state of Jammu and Kashmir in India.  World famous for being the best place to see the snow leopard in the wild, it is believed to have the highest density of snow leopards of any protected area in the world.  It is the only national park in India north of the Himalayas, the largest notified protected area in India (and thus the largest national park of India), and is the second largest contiguous protected area after the Nanda Devi Biosphere Reserve and surrounding protected areas.  The park is home to a number of species of endangered mammals including the snow leopard.  Hemis National Park is India's only protected area inside the Palearctic ecozone, outside the Changthang Wildlife Sanctuary northeast of Hemis, and the proposed Tso Lhamo Cold Desert Conservation Area in North Sikkim.

Supporting paragraphs: Rusizi National Park Gustave (crocodile)
Answer: Gustave