Shadow's Diary! A Sonic The Hedgehog Comic Dub

Shadow is a "lone wolf" who distances himself from Sonic and his friends. He is among the darkest and most violent character in the series, attacking anyone who gets in his way. As shown in Shadow the Hedgehog, he has a ruthless killer instinct. When Shadow sets his mind on something, he is virtually unstoppable. Unlike Sonic who fights fairly in battle, Shadow does not have the same fighting honor that Sonic shows, going so far as to cheat in battle by using a Chaos Emerald and even using Guns against his opponent even if they are not using any weapons at all against him. Despite these traits, Shadow is very caring towards others and is more than willing to help anyone who's in trouble. He sometimes even shows kindness to others when he feels they deserve it. After the events of "Shadow the Hedgehog", he's also less aggressive due to letting go of his past.

In Sonic X, Shadow is not as aggressive, but is still more violent. For example, Shadow attempts to kill Cosmo because he thought she was a Metarex spy. Tails tries to protect Cosmo, which resulted in Shadow giving him a severe beating. He also beat Chris up out of anger for trying to convince him Maria's true wish. The dubbed and edited American version of the show tones down Shadow's dark and violent attitude to make the show more acceptable for younger viewers.