SpriteGen helps game developers produce animated pixel-art characters without drawing each frame. You describe your character, choose a perspective such as side view or top-down, pick a style, and it produces a sprite sheet ready to import into your engine.
A preset library offers starting points like knights, mages and slimes in styles such as 16-bit, retro handheld and cozy farm. It runs online, so you can try it straight from the browser.