From Sonic Retro
<forumuser name="Trakker" />
Trakker is a scener most frequently spotted on the Sonic Retro forums.
In January 2010 he produced some notable fan artwork of Slicer, in the same style as the prereleased Shellcracker concept art for Sonic the Hedgehog 4. On Sega's official blog Trakker's Slicer was cited as the inspiration for the second Needlemouse Challenge competition, asking fans to design further badnik concept art.