Sneaky is a warthog who once worked for Doctor Robotnik. Sneaky's persona was completely contrasted with partner Snooty, from his untidy clothes and eating habits to his way of speaking and bad manners. Together with Snooty, Sneaky put in motion a plan that would see Sonic the Hedgehog humiliated and be beaten by a simple Badnik attack, all while advertising their services. To this end, the pair captured Amy Rose and forced Sonic to work for them. Sneaky later accidentally revealed that the two work for Doctor Robotnik, so Sonic tied them up and sent them back to Robotnik. Sneaky attempted to charm the tyrant, stating he only wanted to please him, but is was probably no good. Sneaky was presumably sent to a Badnik Processing Plant to be converted.