Queen’s Blade Rebellion, the next iteration of the original Queen’s Blade anime series (after Rurou no Senshi, Gyokuza no Tsugumono and Utsukushiki Toushitachi), aired in Japan a year BEFORE My Little Pony Friendship Is Magic (or rather, Tomodachi wa Mahou) was broadcast there. Please double-check if wrong.
Suzuko Mimori ( ), Pinkie Pies voice actress, toyline endorser and singer of the 1st and the 3rd intro songs of MLP FIM J-dub, voiced a Dwarf royalty named Eirin, The Jewel Princess. She is a relative of the previous character Ymir (also a Dwarven Princess), and wields a Dwarven Hammer.
The veteran Kikuko Inoue ( ), Alicorn Princess Celestias voice actress, voiced Branwen, The Enslaved Dragon Warrior. She is, well, enslaved by a Gnome, is dressed up almost like Slave Princess Leia Organa from Star Wars, and is armed with sword and shield.