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[Opacus]

Needs some better timing as you already said so youreself. I love it though, great style, excellent colours.

[Feron]

looks like its hugging aggresively.

[InvaderLupus]

really reminds me of Evangelion. Which is never a bad thing.

[Wakka]

really reminds me of Evangelion. Which is never a bad thing.

I knew I saw it from somewhere .

[Xion]

It doesn't look like flexing.

I concur.

looks like its hugging aggresively.

I concur.

I think flexing would be like striking more of a pose. Hold the most strained position for a second and maybe make his face change to a strained expression, with like, wide eyes or maybe a roar. It also looks wierd that he's lunging forward. I'd say a more "flexy" pose would be one with a straighter back.

[SolidIdea]

The animation looks like something a boxer (fighter) would do. I'd make the "hugging" movement more stiff and trembled, like the Hulk (tv) did. Showing anger and fierceness.