3d cartoon with evolutions in .obj format

Model a original funny 3D character (cartoon) with 6 evolutions (one “basic” level, 2 downgrades and 3 upgrades). Like Pokémon but with a touch of “funny”.
Added example image (that one is not in 3d but you get the idea of the cartoonish character). It could be a funny character like the octopus image, with “evolutions”.
The evolutions will consist of getting the character from fat to normal to muscle/fit, following the following guidelines:
(-2): fat and lazy
(-1): chubby and funny
(0):  normal, not fat! Not skinny! No muscle
(1): a little fit, thinner waist, little bit bigger chest, little bit more muscle overall
(2): even more fit than the previous one, one cool vein on the arm
(3): super fit, muscles are biggest, some cool veins here and there..

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Deliver specs:
- Deliver in .obj format, .dae and project format (blender, maya, C4D, etc...)
- Deliver colored textures
- T-pose
- no need for rigging
- no need for animation