Art by Mike Hadley
Power Pack Y-Fronts are a trap designed by Doctor Robotnik, possibly to defeat Sonic the Hedgehog. The weapon looks largely like a regular piece of underwear, except for two enormous, extendable legs that protrude from the bottom of the Y-Fronts. It is currently unknown how the trap worked or what it was to be used for. The Y-Fronts were designed at the same time as the Atomic Pea-Shooter.