Knuckles’ Chaotix, Sega 32X

Knuckles' Chaotix is a platform game, published for the Sega 32X in 1995, that is a spin-off from the Sonic the Hedgehog series. It features Knuckles the Echidna (who first appeared in Sonic the Hedgehog 3), and a rather unique partner system where characters are tethered to each other by a rubber band.