Critter is working with GN'R

Engineer, mixer , and remixer Critter is currently working in the studio with Guns N' Roses as a programmer. He's also involved with Chris Vrenna's latest project. He's previously worked with such acts as Filter, Liz Phair, the Cure, Marilyn Manson, Redhot Chilli Peppers, and Vrenna's former group Nine Inch Nails.

source: MTV -News