Earth-0

The primary reality where the Flash protects Central City after the multiverse merged.

Earth-0 represents the primary reality within the modern Arrowverse continuity following the multiverse reboot. It serves as the central stage where The Flash and his allies protect humanity from metahuman threats and interdimensional dangers. This dimension integrates histories from previous worlds into a cohesive timeline, ensuring stability for its inhabitants while maintaining access to the Speed Force. As the main hub of the DC television universe post-Crisis, it houses key locations like Central City and acts as the operational base for major superhero teams. The reality is defined by its resilience against paradoxes and its role as the anchor point for multiversal travel in the current era.

Quick Facts

Primary hero: Barry Allen (The Flash)
Status: Active Unified Reality
Key hub: Central City
Origin event: Crisis on Infinite Earths
Multiverse role: Anchor Dimension
Energy source: Speed Force

Lore & Background

Following the multiversal collapse known as Crisis on Infinite Earths, the surviving fragments of countless dimensions were fused into a single, stable reality designated as Earth-0. This event fundamentally altered the cosmic landscape, ensuring that the core heroes of the Arrowverse could operate within a unified history rather than navigating conflicting timelines. The merging process preserved essential memories and relationships while resolving paradoxes that previously threatened existence itself. In this new continuity, the Speed Force acts as both an energy source and a protective barrier against external threats from the multiverse. Barry Allen stands as the anchor of this reality, his connection to the lightning allowing him to maintain the flow of time across Central City and beyond. The Justice League operates openly here, coordinating defense strategies against villains who might exploit residual dimensional instability or seek revenge on the merged world. Despite its stability, Earth-0 remains a focal point for interdimensional travel. Legacy heroes from previous eras occasionally visit to assist in crises, acknowledging that their safety depends on the strength of this primary dimension. The reality serves as the cornerstone of the DC universe within the television continuity, balancing the need for heroic action with the responsibility of maintaining cosmic order after such a massive reconstruction event.

Reader's Guide

Earth-0 functions as the central hub for the modern Arrowverse continuity following the catastrophic events known as Crisis on Infinite Earths. Unlike previous fractured realities, this dimension represents a unified timeline where heroes from various former worlds now coexist under a single sky. The Speed Force remains an active energy source, allowing speedsters like Barry Allen to traverse time and space while maintaining stability within their home world. History dictates that this reality was formed by merging the remnants of Earth-1 and other parallel dimensions into one cohesive universe. This consolidation eliminated many conflicting histories but preserved key relationships and memories essential to the heroes' identities. While the multiverse still exists beyond its borders, travel requires careful navigation through the Speed Force or advanced technology like the Waverider. Notable locations include Central City, which serves as a primary base of operations for The Flash and his allies within STAR Labs. Other major hubs such as Starling City and National City remain connected through shared communication networks and emergency response protocols. This reality operates under standard physical laws but is frequently influenced by metahuman activity and interdimensional threats seeking to destabilize the new order.