The 'He' of the Wood He is widely believed to be the mythical figure of Pan, the Greek god of nature, forests, and shepherds. This identification is based on the literary and artistic references to Pan as the guardian of the wood, embodying the spirit of the forest.

The connection between Pan and the 'He' of the Wood He is rooted in the rich mythology and symbolism associated with Pan. Pan is often depicted with the body of a man and the head of a goat, symbolizing the union of human and animal realms. His association with the wood is further reinforced by his role as a protector of the natural world, particularly forests and wildlife. In many ancient Greek myths, Pan is portrayed as a playful and mischievous figure, but also as a guardian of the natural order.

Data supporting this identification include the numerous depictions of Pan in art and literature from ancient Greece. For example, the famous marble sculpture known as the "Bust of Apollo and the Head of Pan" (c. 510-500 BCE) from the British Museum clearly shows the head of Pan with goat-like features. Additionally, the Roman poet Ovid's "Metamorphoses" (8 AD) provides a detailed account of Pan's origin and his role in the natural world.

The association of Pan with the 'He' of the Wood He is also supported by the historical context of the phrase itself. The phrase "Who's the 'He' of the Wood He" appears to be a playful inversion of the more common question "Who's the 'He' of the wood?" This inversion suggests a playful reference to Pan, who is often associated with the woods and forests.

In conclusion, the 'He' of the Wood He is most likely Pan, the Greek god of nature, forests, and shepherds. This identification is supported by the rich mythology and symbolism associated with Pan, as well as the historical and artistic references to him as the guardian of the wood.