Manananggal

The manananggal is a Filipino night creature said to split at the waist and fly off with its upper half, leaving the legs behind. It has relatives across Southeast Asia, most of them flying heads.

Wikipedia gives the name's meaning as "remover" and describes a being that can part its upper torso from the rest of its body. Fangs and wings give it the look of a vampire.

The oldest record describes a different split. Juan de Plasencia, writing in 1589, listed the magtatangal, which appeared at night to many people without its head or entrails, carried its head from place to place and rejoined it by morning, still alive. Plasencia judged it a fable the devil had led people to believe, though local people told him they had seen it. He placed it in Catanduanes. So the 1589 figure lost its head.

The waist split appears in Isabelo de los Reyes's El Folk-lore Filipino (1889), under the name asuang. He writes that it scouts houses early in the night and preys on neglected children and lone travellers. At midnight it leaves its lower half, from the waist down, in a corner of the house while the upper half flies off to feed. If someone finds the abandoned half and salts the cut, the two halves cannot join again.

Wikipedia's article on the Malay penanggalan names its regional kin: the Ahp of Cambodia, the Kasu of Laos, the Krasue of Thailand, the Kuyang and Leyak with their Indonesian names, Vietnam's Ma lai, the Temuan people's hantu polong, and the manananggal. Yvette Tan, writing for CNN Philippines in 2017, says the penanggalan's head comes away with its entrails hanging below. She compares how the two feed: each sits atop a house where a baby has just arrived and lowers a long tongue to suck out the insides of mother and child.