I used to add images into different animation of a Sprite object. For example, I got 4 type of penguin enemy and each of them have their own idle animation and gotHit animation. So I got 8 animations in one Sprite.
You can add in more images into a single Sprite object. But make sure, not to use too many images because you could hit the nasty 10,000 object limit.
Alternatively, you could design your images as components. Ex. arms, legs, torso, etc. as separate images, assemble them up and animate them using something like https://www.scirra.com/store/game-makin ... ter-pro-78 This could reduce number of animation frames and allow compositional design.
But again, this also depends on what kind of game are you making.