FBX bone structure for character animations for 2D video game

I have 6 characters fbx models with textures which require new additional animations.

No artwork, no texturing, just a new bone structure for animations.

The character plays in 2D so it's all left, right up and down.

The characters each have bone structures 1 new bone structure is required which can be used in all of the characters.

So it's a bone structure which is required.

There will be 6 more animations to be added to the list.

I will provide you with the 6 characters and their textures etc

THIS IS A FIXED FEE AND NOT A PLACE HOLDER RATE.IT'S NOT AN HOURLY RATE