In Philippine folklore, the shape-shifting monster combining ghoul, vampire, and witch traditions is the aswang.
Aswang is best understood as an umbrella term rather than one standardized creature. Filipino folklore uses it for several malevolent beings, including blood-drinking vampires, corpse-eating ghouls, witches, weredogs, and viscera-sucking monsters. Their forms and habits vary considerably between islands and communities.
Spanish colonizers recorded aswang traditions by the 16th century, describing the creature as one of the most feared beings in the Philippines. The legends remain especially associated with the Visayas, southern Luzon, Mindanao, and the province of Capiz. Stories often portray an aswang as someone who appears ordinary by day but hunts or transforms at night.
A common mix-up is treating the manananggal as a completely separate answer. It is a specific type of aswang: a woman who separates her upper body and flies with bat-like wings. Tikbalangs, by contrast, are horse-headed or horse-like forest beings, while kapres are usually giant tree-dwelling spirits.