Sonic's freaking BLUE, and can run at the speed of sound! How alike is that to RL? Stop complaining over logica in a SONIC universe....we can go veeeery far into that discussion.
I think Shadow was simply based off Sonic, having given the stripes, chest fur and other things to look less like Super Sonic. They even edited Super Sonic to have his spikes go right up so it doesn't look like Shadow's spikes nowadays, just to kill the similarity.
Sonic's freaking BLUE, and can run at the speed of sound! How alike is that to RL? Stop complaining over logica in a SONIC universe....we can go veeeery far into that discussion.
Well, it wouldn't be the oddest animal in the series.Heck they have Echidnas and Chaos.