Don't be afraid to look silly.
I had to make squirrel noises as Bubbles and without realizing it, I was making the face and putting my fingers up to my face to look like a squirrel and everyone made fun of me for the rest of the day.
Whenever you do an animated project or a voice-over project it's inevitable that part of your personality comes into play.
Many people think voice over artists just read, there's much more to it. Without acting beats, scene study and improving skills, you won't make it.
I think there are more female characters in videogames now but I also think that's because videogames in general are more diverse now.