https://e621.net/tags?commit=Search&search%5Bcategory%5D=4&search%5Bhide_empty%5D=1&search%5Border%5D=count

8 of the top 10 most popular characters are MLP characters and the other two are Judy Hopps and Nick Wilde. And there's still 18 more MLP characters in the first page. Truly amazing.