You're welcome, and that's all true. When making fan characters, they have to be new animals. There are already enough hedgehogs. We got Sonic, Shadow, Silver, Scourge, and Mephiles. And echidnas are all supposed to be extinct except for Knuckles, Tikal, and Shade. Randomly bringing another one out of nowhere would be nonsense. And cats are ok, but I feel like they're a bit cliche and overused. Big and Blaze are the only cat characters. But I feel that cats are too common as fan characters in every fandom. Maybe a good cat character could say otherwise, but I haven't seen one yet, so I'm not convinced.