Highland Mushroom from Borderlands 2. Drawn out of my screen view while playing. Every 15 minutes or so I'd have to blow up another wave of stalkers and then re-orientate myself in front of the subject. Sharp-Heart comes from the expand/contract motion this thing does in the game.
Again, it's based from borderlands 2, but only the shape, most detailing I put in was a blend of game and my own.