Voiced by Liam O'Brien . O'Brien provides a menacing, vibrating quality to his voice that perfectly captures the villain's obsession and hatred for Barry Allen. Signature Sound Effects (SFX)

Beyond dialogue, the non-verbal vocalizations (grunts, effort sounds, and pain cries) are engineered to convey the physics of super-speed. Unlike a brawler like Bane, whose grunts are deep and heavy, the Flash’s effort sounds are short, sharp, and staccato—almost like rapid exhalations. When he takes damage, his cries are high-pitched and reactive, selling the idea that even a single landed blow is a shocking disruption to his accelerated perception. Most importantly, his breathing patterns during dashes or the “Speed Zone” ability are deliberately layered with a Doppler effect; as he zips across the screen, his voice momentarily distorts, suggesting that his vocal cords are literally moving faster than the sound they produce.

Flash does not run; he teleports in small increments. Listen closely to his footstep loops.

Unlike the lighthearted, quippy Flash often seen in the animated series or the CW television show, the Injustice version of Barry Allen exists in a fractured world. The voice lines reflect a hero seeking redemption. When players search for Flash voice sounds, they are often looking for the specific tonal qualities that McDonough brings: a raspy, urgent delivery that implies he is always thinking ten steps ahead.

Voiced by Travis Willingham . This skin replaces Barry with the Golden Age Flash, featuring unique lines that reflect his "old school" heroism and mentor-like persona.