John Seasock

Seasock returned to Sudden Impact for the 2006 winter season, but left the team in April. He has since joined Live Nation, and had been driving various trucks for them, including Team Suzuki, El Toro Loco, and Inferno. For the 2007 winter season, he became the driver of Batman. In this truck, Seasock scored the biggest win of his career as he won the 2007 Monster Jam Racing Championship. In 2008, he repeated the feat, becoming only the second back-to-back racing champion.

In 2004 Seasock's team became a part of Chiller Motorsports to form Sudden Impact Racing. Seasock stepped aside from Sudden Impact and climbed into T-Maxx, splitting up a combination known to fans for many years.

He continued in that truck until 1999 when he purchased the Liquidator from Bob Fisher and also renamed it Sudden Impact. This truck went through several revisions and paint schemes through its lifespan. It also brought Seasock to stardom on the USHRA Monster Jam circuit, helping him receive four World Finals berths and become one of the more well-known truck/driver combinations in the series. He also worked as a part-time driver for Mike Welch Motorsports, driving Pirate Pete.

Seasock began his interest in monster trucks when he saw Bigfoot at the Philadelphia Spectrum. In 1990 he became a full-time driver with his first Sudden Impact, a red Ford F-150 which was leaf-sprung.

In the middle of the 1990s, Seasock drove for several teams, including a stint in the Devil's Dodge truck, before buying the Storm Warning vehicle and renaming it to Sudden Impact. It was the first truck to sport the recognisable teal paint scheme.

John Seasock (born July 3, 1965) was a professional monster truck driver. He last drove Grinder sponsored by Advance Auto Parts, and is a two time Monster Jam World Finals Racing Champion.