Knuckles the Echidna is a fictional, anthropomorphic red echidna from the Sonic the Hedgehog video game franchise owned by SEGA. Knuckles was the original main character of the Lippies series until Lippies V.5, where he was replaced with Nyro. Knuckles' character was very similar to that of Thatcher's in C.I.O, who is based off Knuckles from Lippies V.3.