Jason Spisak is an American voice actor known for his extensive work in animation, anime, and video games, with a career spanning from the mid-1990s to the present. Born on August 29, 1973, in Wilkes-Barre, Pennsylvania, he has built a reputation for portraying a wide range of characters, from teenage heroes to complex villains. Beyond his acting career, Spisak is also a computer programmer and producer. He was a co-founder of the software company Lycoris and is a co-leader of the Symphony OS Project, for which he designed the Mezzo desktop environment.

Spisak's entry into voice acting began with anime roles in the mid-1990s. One of his earliest credits was in the series Saint Tail in 1995. He gained recognition in the early 2000s for voicing the lead human character, Kiyo Takamine, in the popular series Zatch Bell!. Around the same time, he took on the role of Koji in Transformers: Robots in Disguise and Ryuho in s-CRY-ed. His work in anime also includes voicing Geo Stelar in Mega Man Star Force and Kenji in Initial D. In the 2020s, he continued to work in the medium with roles such as Ford Travis in the Netflix series Pacific Rim: The Black.

In addition to his work in Japanese anime, Spisak has been a prominent figure in Western animation, particularly within the DC animated universe. He is well known for voicing Wally West, also known as Kid Flash, in the acclaimed series Young Justice, a role he reprised for the film Teen Titans: The Judas Contract. Another significant and recurring role was Razer in Green Lantern: The Animated Series. He has also frequently voiced the iconic villain, the Joker, in various projects, including the films Batman: Hush and multiple Lego DC direct-to-video titles.

Spisak's voice is also widely recognized in the video game industry. His performances include Bartz Klauser in multiple Dissidia Final Fantasy games, Avan Hardins in Valkyria Chronicles II, Jason Dante in Uncharted: Golden Abyss, and the deranged mechanic Chumbucket in Mad Max. He portrayed the cunning Vulpes Inculta in Fallout: New Vegas and Oswald Cobblepot, also known as the Penguin, in Batman: The Telltale Series. More recent video game credits include Raymond "Skizzo" Sarkozi in Days Gone, Loki in Marvel Ultimate Alliance 3: The Black Order, and Deag Ranak in Doom Eternal.

Throughout his career, Spisak has collaborated frequently with a recurring circle of voice actors, including those often associated with Bang Zoom! Entertainment and Studiopolis. This includes frequent work with actors like Troy Baker, Laura Bailey, Nolan North, and Kevin Michael Richardson across various DC animated series and video games. He has also worked multiple times with directors and casting teams involved in the Lego DC film franchise.

Spisak's contributions to the field have been recognized with several industry accolades. He won a Young Hollywood Award for Best On-Screen Couple with Stephanie Lemelin for their work on Young Justice. He has also received multiple Behind the Voice Actors Awards, including wins for Best Vocal Ensemble in projects like JLA Adventures: Trapped in Time and Young Justice, as well as nominations for his leading performances as Razer in Green Lantern: The Animated Series. In 2021, Spisak received widespread critical acclaim for his portrayal of the complex antagonist Silco in the hit Netflix animated series Arcane, based on the video game League of Legends.