Shadow is an antromopodic Hedgehog that was created as Maria's best friend. He was created by Dr. Eggman's grandfather. He was built at a Space Colony Facility Ark.
In SMBZD: Two World's Fate, Shadow is a main character and is easily still in his grumpy moods. However on many occasions he shows signs of appreciating his teammates more often. He was great when fighting Donkey. He defeats Donkey in episode one and in eisode two beats him up for fun.
Shadow's fighting is like everyone's but connects with Sonic the most as both follows up not only on DBZ but on Stree Fighter as well. Shadow can also transform like the others. See Shadow-Transformations for more details.