Mechanized Armed-Legged Aerial Cavalry

Mechanized Armed-Legged Aerial Cavalry, otherwise simply called MALAC, is a kind of giant, piloted humanoid aircraft unique to the setting of Seraphim Grave.

MALACs are usually made from the bio-metallic tissue and skeletal frames of Angel Corpses found in Seraphim Graves, and thus are made mostly of Malakhite. Any weapons, control, radar, and life support systems retrofitted are usually made of mundane earth materials.

MALACs move and fly thanks to the Keter Biosynthetic Drive (KBD, pronounced Kavodh) which is a human-made rough analogue of their original internal core organs.

Etymology
The abbreviation of MALAC seems to be derived from the hebrew word for angel, malakh, meaning 'messenger'. Their bio-metallic alloy malakhite also shares this root word.