Shadow is an artificially created black and red hedgehog whose hover shoes propel him at extreme speeds that rival those of Sonic.[4] He can also use the Chaos Emeralds to manipulate time and space through a technique called "Chaos Control". The character first appeared in Sonic Adventure 2, where he was depicted as a villain and later an antihero, suffering from a tragic backstory; occasionally, he becomes an ally to Sonic and his friends, but remains at odds with them due to their differing moral compasses.

If you want to voice act as SHadow, Jason Griffin & Kirk Thornton roleplay as him. Here's an example... https://www.youtube.com/watch?v=4PHZHdwuShI