structural:summarization
Common attributes

Ganesha has been represented with the head of an elephant since the early stages of his appearance in Indian art. Puranic myths provide many explanations for how he got his elephant head. One of his popular forms, Heramba-Ganapati, has five elephant heads, and other less-common variations in the number of heads are known. While some texts say that Ganesha was born with an elephant head, he acquires the head later in most stories. The most recurrent motif in these stories is that Ganesha was created by Parvati using clay to protect her and Shiva beheaded him when Ganesha came between Shiva and Parvati. Shiva then replaced Ganesha's original head with that of an elephant. Details of the battle and where the replacement head came from vary from source to source. Another story says that Ganesha was created directly by Shiva's laughter. Because Shiva considered Ganesha too alluring, he gave him the head of an elephant and a protruding belly.

Ganesha's earliest name was Ekadanta (One Tusked), referring to his single whole tusk, the other being broken. Some of the earliest images of Ganesha show him holding his broken tusk. The importance of this distinctive feature is reflected in the Mudgala Purana, which states that the name of Ganesha's second incarnation is Ekadanta. Ganesha's protruding belly appears as a distinctive attribute in his earliest statuary, which dates to the Gupta period (4th to 6th centuries). This feature is so important that according to the Mudgala Purana, two different incarnations of Ganesha use names based on it: Lambodara (Pot Belly, or, literally, Hanging Belly) and Mahodara (Great Belly). Both names are Sanskrit compounds describing his belly (IAST: udara). The Brahmanda Purana says that Ganesha has the name Lambodara because all the universes (i.e., cosmic eggs; IAST: brahmāṇḍas) of the past, present, and future are present in him.

The number of Ganesha's arms varies; his best-known forms have between two and sixteen arms. Many depictions of Ganesha feature four arms, which is mentioned in Puranic sources and codified as a standard form in some iconographic texts. His earliest images had two arms. Forms with 14 and 20 arms appeared in Central India during the 9th and the 10th centuries. The serpent is a common feature in Ganesha iconography and appears in many forms. According to the Ganesha Purana, Ganesha wrapped the serpent Vasuki around his neck. Other depictions of snakes include use as a sacred thread (IAST: yajñyopavīta) wrapped around the stomach as a belt, held in a hand, coiled at the ankles, or as a throne. Upon Ganesha's forehead may be a third eye or the sectarian mark (IAST: tilaka), which consists of three horizontal lines. The Ganesha Purana prescribes a tilaka mark as well as a crescent moon on the forehead. A distinct form of Ganesha called Bhalachandra (IAST: bhālacandra; "Moon on the Forehead") includes that iconographic element.

Ganesha is often described as red in colour. Specific colours are associated with certain forms. Many examples of color associations with specific meditation forms are prescribed in the Sritattvanidhi, a treatise on Hindu iconography. For example, white is associated with his representations as Heramba-Ganapati and Rina-Mochana-Ganapati (Ganapati Who Releases from Bondage). Ekadanta-Ganapati is visualised as blue during meditation in that form.