Doppelganger (Arrow)

A doppelganger, in the context of the Arrowverse television series Arrow, refers to a character who is a near-identical duplicate of another character, originating from a different Earth in the multiverse. The existence of doppelgangers is a consequence of the infinite parallel universes coexisting within the Arrowverse multiverse.

These doppelgangers can have vastly different life experiences, personalities, and moral alignments compared to their counterparts. While some doppelgangers might be heroic figures on their Earth, their counterpart on Earth-Prime could be a villain, and vice-versa. The reasons for the divergence in their lives are often related to specific choices and events that played out differently in each respective universe.

The introduction of the multiverse and doppelgangers created significant narrative opportunities within Arrow, allowing for exploration of alternate realities, character development, and examination of the nature of identity and destiny. Encounters with doppelgangers forced characters to confront different versions of themselves and the potential consequences of their actions.

Notable examples in Arrow include Laurel Lance/Black Siren (Earth-2 Laurel Lance), and characters encountering versions of themselves during various multiverse crossovers. The appearance of doppelgangers often signaled a major multiversal event or a significant threat to Earth-Prime and the broader Arrowverse.