Grubitsch "Grubbs" Grady is one of the main characters in The Demonata series by Darren Shan.
In addition to his work on album covers, Melvyn Grant has produced illustrations for many books, including the Fighting Fantasy gamebooks FF 3: Deathtrap Dungeon, FF9: Shamutanti Hills, FF 11: Khare Cityport of Traps, and FF13: The Seven Serpents, Terry Pratchett's Where's My Cow?, The Demonata series by Darren Shan and The Bartimaeus Trilogy (USA) by Jonathan Stroud.