So, I had this concept idea in my head for a while, somebody slim/fragile carrying this enormous flask of SOMETHING(blood/water/sealed environment with entire ecosystem?). Primarily because I thought it would be a nice visual design for a character (dynamic forms and shape masses), but when I saw that there is another ArtWar, it all snapped into place.
I roughly sketched out concept of my character, just to claim the idea (cause Im always afraid that my ideas were already made by someone else.), basically, his/her name is Serras. I don't have a clear vision of how he/she should look like yet, I don't even know if it will be a dude or dudette (most likely a dude), so I will experiment and see what fits better.

Right now I am certain of the abilities. As you can see, character is of the water element, has an ability to affect and control water, to an extent of making it levitate and grasp and contain solid objects with it's mass and density (I hope you get me, basically a water bending). Serras carries this huge flask/container on his back, like a backpack, it contains alot of water, and whats more important KILLER FISH SWARM (Super Piranhas), Serras cannot command them or affect their will, however he/she can purposely starve them, to make them more ferocious, and of course, when it is time to battle, Serras can transport The Swarm, along with the water onto the enemy, or even trap them inside big bubble with the Killer Fish Swarm to quickly dispose of them, leaving only bones and no mess at all.