Slingerland (real name, Brad Flick) is known for his contributions to the Sonic fangaming community and as a writer for The Sonic Stadium and Sonic Retro. He was a member and administrator at SFGHQ and has created a few static engines and sprite libraries. He was acknowledged the most for his fangaming project, Sonic Nexus, and his run as director of the Sonic Amateur Games Expo in 2007.
Beginning in 2008, he partnered with The Taxman and Hunter Bridges to bring Nexus to Taxman's Retro Software Development Kit, releasing a demo at the Sonic Amateur Games Expo that same year. In 2011, it was announced that Sonic Nexus was merging with Sonic XG and Retro Sonic, as all games were built using the Retro Sonic engine, to form Retro Sonic Nexus. The project was quietly cancelled prior to SEGA's release of Sonic the Hedgehog CD (2011).
In 2016, he joined the development team of Sonic Mania as a level designer.