Shard the Metal Sonic (call sign Jack in the Secret Freedom Fighters), originally known as Metal Sonic and sometimes Mecha Sonic, is a character that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. He was the first Metal Sonic ever created and was one of the deadliest robotic models created by Dr. Ivo Robotnik. He is based off his organic counterpart and Robotnik's most hated enemy, Sonic the Hedgehog, and was one of the first robots in the Metal Sonic Series. Metal Sonic was pitted against Sonic and friends on numerous occasions, until he was seemingly destroyed when he chose to sacrifice himself to save Sonic and Tails. He was at some later point recovered, rebuilt, and - having gained a social conscience and sense of morality - recruited as a member of the Secret Freedom Fighters.