Shard the Metal Sonic, also known Shard the Metal or more commonly, Shard, came into existence as Metal Sonic (also known as Mecha Sonic). Metal Sonic was one of the deadliest Badnik models created by Dr. Ivo Robotnik, and was based off of Sonic the Hedgehog. Metal Sonic v1.0 was meant to be Robotnik's own version of Sonic, kidnapping Amy Rose as his first mission. He then raced Sonic, but Metal Sonic caused his own body to melt as he tried to keep his speed up. Metal Sonic was rebuilt into v2.0 soon after the encounter and fought against Knuckles the Echidna and his new Chaotix at Happyland Amusement Park, only to be quickly destroyed even after turning intoTitan Metal Sonic with a Power Gem core. Metal Sonic survived the battle and constructed himself a new body much later as v2.5 using the Power Gem, and then kidnapped Tails as bait for Sonic. With new powers granted by the gem, Metal Sonic challenged his organic counterpart to save Tails from Mount Mobius, but found he had developed some form of "conscience" and chose to sacrifice himself to save them both as the volcano erupted. Following this, his core was recovered intact, whereupon Metal Sonic was given a second chance with a new body and identity as Shard. As part of his reform, Shard was assigned to be an agent of the Secret Freedom Fighters under the call sign "Jack".