Fuck you, I actually like Sonic Underground, despite how terrible it is.
I stubbornly spell her name as "Sonya" rather than "Sonia" because I ardently believe in making characters that are more than "Sonic with an 'a' at the end." And she does have a different personality...granted, she's fairly flat and one-dimensional, but...yeah, there's really no defending her. Ah, well.