Nor any humans that aren't white it would seem.
Depressingly, this isn't anything new. Back in the early 80's when I did a one-off course at uni in writing for children, the tutor, an esteemed author of children's books, told the class (there were about 8 of us, all women,) that if we wanted to achieve commercial success, make sure our lead characters were male. Girls will read about girls or boys, but boys will no read stories that mainly feature girls in the lead.
If you look at most children's tv programmes, films and books, that rule seems to still apply 25 years on. Even non-human character leads (e.g. Rango, Smurfs, etc.) tend to be male or at least assumed male. On the issue of ethnicity, non-white human characters tend to be at the fringes (wow, tokenism, yeah,) and again, the assumption is that non-human characters are also white, unless they are given other "attributes" like accent, clothing or settings (and often these just reflect very negative stereotypes of that ethnic or cultural group.)
There's oodles of research out there (just on a lunch break now, so can't get my hands on it) that shows the importance of small children being able to identify with characters in books, stories etc. as a means of developing self-awareness and self-esteem. If the female and Black characters in a story are absent, or relegated to the background, that sends a powerful indirect if not overt message that females and non-white people, well, aren't important enough to lead, to drive a story, to have the fun, to have the adventures, to achieve, etc.
I mentioned above that indicators of ethnic or cultural difference in characters often resorts to crass stereotypes. It's also worrying that portrayals of the few female characters (human or otherwise) in cartoons, films, etc. also often reflect sexualised, sexist stereotypes. Think Smurfette, think the females in the Chipmumks, think the stylising of the female cat in Puss n Boots. That's probably worse than having no female characters at all.
This video describing Katha Pollitt's is quite revealing (even Smurfette's transition from dark haired, evil tool of Gargamel to the blonde, passive, feminised form has racist and sexist undertones.)