Why is "Mutavore" called "Sydney"?

That's the one who broke through the wall right? Well, he attacked Sydney, what else do you need to know?

Well, Yeah he broke the wall in Sydney but, just because he was is Sydney he was called Sydney but his real name is Mutavore!!!

Because Sydney is easier to say. I mean really, I can't even pronounce Mutavore.

[quote]I can't even pronounce Mutavore. [/quote] by Deltadromeus Same problem, I call him either Muty or Sydney since Mutavore is very weird on my tongue (tried Google to pronounce it). The thing is which one individual prefers: Muty, Mutavore or Sydney?