A deity in the form of कुज or Planet Mars. There are different versions in the पुराणस् regarding the birth of मङ्गल .

सती committed suicide at the दक्षयाग and शिव greatly griefstricken at the loss of his wife started penance. A sweat drop fell from the forehead of शिव doing severe penance and मङ्गल was the son born of that drop. शिव then installed मङ्गल among the Navagrahas and according to the science of astrology this Graha is considered the protector of the landed property and the wife of a person. (Śiva Purāṇa, Rudra Saṃhitā 1-10 and Skanda Purāṇa 4-1-17) .

शिव married विकेशी daughter of हिरण्याक्ष . One day while they were engaged in sexual plays अग्नि came to their presence. Enraged at this the eyes of शिव blazed with anger and a drop of hot water from his eyes fell on the face of विकेशी and she became pregnant. After some days विकेशी found it impossible to bear the embryo of शिव thus formed and she aborted it. A child was born and the goddess of earth took it and fed it with breast milk. It was that child who later on became मङ्गल . (Skanda Purāṇa) .

मङ्गल was born of the blood drops of शिव . (Bhaviṣya Purāṇa) .

मङ्गल was the son of भरद्वाज . (Gaṇeśa Purāṇa) .

मङ्गल was the son of भूमिदेवी . देवस् , sages, ब्राह्मणस् , मनुस् and गन्धर्वस् all worshipped भूमि at the time of वराहकल्प . It is also said in the वेदस् that भूमिदेवी is the wife of महाविष्णु 's incarnation as वराह . मङ्गल alias the planet Mars was born to भूमिदेवी of महाविष्णु as वराह . (9th Skandha. Devī Bhāgavata)